StarPilot

Name: StarPilot
Rating: 4.9 (8 reviews)
Author: Starpath Corp

by Starpath Corp

iPhone · iPad

Active Last checked 31 Jul 2026

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What it is: Store information collected; independent summary not yet available.
At a glance: $49.99

Categories and search queries

Official categories

Navigation
Reference

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Key functions

Function	Availability	Access	Scope	Evidence
Family Sharing	Yes	Unknown	App Store	Store published

Screens

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9 store screenshots

Pricing & paywalls

App Store

Shown for US

Price: $49.99

Last verified 31 Jul 2026

Ratings & reviews

App Store

Shown for US

4.9 8 ratings · App Store

5/5Best in class
As a professional US navy navigator I've used this app daily for at least 7 years. First on a TI89 calculator, then on iPhones starting with a 4s when that was new. Now on a 7 Plus. Makes my work easier and would be lost without it. The U/I may not be as polished as an app from Apple but it certainly does the job. Have never had a single crash or malfunction. Paid once for the app years ago and have benefited from regular updates. It is the only Nav app I recommend to other officers and cadets.

KhunJohn · 31 Jul 2026
5/5iCloud Syncing
Overall great tool. Would be great if you could sync the Sight Archive to the cloud so that sights entered on iPhone could be accessed from iPad or vice versa.

ACN1 · 31 Jul 2026
5/5Waiting for any updates
I'm using Starpilot for taking gyro errors and position fixing frequently. It's giving a very precise figures and very reliable and can be used for navigation on big vessels. I'm recommending this app for all navigators, at the moment it's the best one. But it will be great to have a features such as : printing of determined position by dead reckoning and observed position. At least possibility to save it and then to print manually from album or whatever. Also will be nice to have an option to take a position and time fix automatically by pushbutton on taking a sight! A little improvement in a drawing of chart mercator's scale and observed position will be nice(sometimes very hard to read something there and not a perfect tool for zooming). Will be nice to include possibility of reviewing of daily Almanac and associated pages for manual calculations(useful for practical navigators for improving skills). Thanks, and waiting for updates! If will be any improvements I'll recomend and spread between many of my iPhone-users and navigators this great application! Good luck!

Oleg Odzemok · 31 Jul 2026
5/5Starpilot on Antarctic Voyage
The Star Pilot package is absolutely fantastic. I have had the good fortune to complete two voyages across the South Atlantic, the first in the yacht Pelagic Australis and the second via Antarctica in the three masted barque Europa, both were hugely enjoyable voyages. Throughout both voyages I took sun, moon and star sights whenever possible, instead of dreading getting out all the tables I had a position within minutes of taking the final sight thanks entirely to the Star Pilot software installed on a Ti 89. This has huge advantages over a laptop as the skipper does mind if you leave it around the chart table and it is much easier to keep safe and dry. The satisfaction of consistently getting positions within 10 miles of the GPS is very satisfying but on a two month voyage there is also a great deal of pleasure to be gained in planning the star sights each day and entering the results in the log, it is a great way to learn more about the our universe. There are other navigational calcs as well and even though I don't need the rhum line course from Cowes to Lymington I still take the Star Pilot on my coastal cruises. Excellent piece of kit. Many thanks, Ken Barker

sailomatic · 31 Jul 2026
5/5Great Professional tool
The Starpilot iphone/ipod program is a well made celestial navigation application for the professional mariner. I have made a number of sea passages using the app for iphone and have found it very useful, well designed, and fun to use. No matter what your level of involvement is with celestial navigation (C-Nav), from just doing a few azimuths or amplitudes to check your vessel's compass to doing full days worth of celestial navigation, this program has it all covered. For me it puts the fun back into C-nav by removing almost all of the tedious number crunching and calculation errors (human) that can go along with using the publications and I have found the results to be highly accurate. I do not recommend that someone preparing for professional testing/licensing use this program as the sole means of learning Celestial Navigation. For that there is no substitute for learning to use the publications in this situation. Though, it could be used as a way to check your work. One advantage I can see this App would have onboard a small vessel is the precious space saved by the reduction of publications needed to do C-Nav. Another advantage that using this app on an iphone or ipod touch has is that the device is backlit so you can do your calculation on a dimly lit bridge or chartroom without having to hold a flashlight to see your work, ruining your night vision. The program is well designed and layed out. But, Don’t be fooled though, it will take some time to learn your way around and get your bearings. But, I would think this would be expected based on the complexity of c-nav and the number is different uses the program has. After playing around with it a bit and taking a few sights most people should have no problem with it. Also the manual is built into the program under the “help” option. The creator of this app seems to be very passionate about his product. I wrote to him to make a suggestion about the Starpilot program and within minutes of hitting the send button I had a reply from him. I strongly recommend this app.

promarPT · 31 Jul 2026

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Versions

App Store

1.09
Fixed a defect in review sights where limb of sun/moon was not being displayed correctly. Moved Hs to top of data entry form to make it easier to enter information when doing consecutive sights.
1.10
Updated help files Fixed spelling error in one menu A printable version of the StarPilot help file is now available for download from our website at www.starpilotllc.com
1.11
StarPilot youtube training videos are now available. http://www.starpilotllc.com/videos.htm This version fixes the following. 1. AM/PM Twilight segmented control in sight planner 2. In settings Dest Lon had a N/S designator instead of E/W 3. added the ability to query long at arbitrary lat in the rhumb line computation to aid in transfering rhumb line between charts. 4. updated documentation accordingly.
1.12
StarPilot youtube training videos are now available. http://www.starpilotllc.com/videos.htm This version fixes the following. 1. Error in the 'UT from known position" utility.
1.14
- updated pdf manual to include new features and missing settings section - update html help files to include new features - fixed bug in add times - added nighttime viewing - Magnetic Variation Epoch expanded from 2010-2015 to 2000-2015 - added GPS functionality to fix by computation and to the data entry form. - removed memory leak in fix by computation. - added GPS console to utilities menu - added StarPilot settings bundle with switch to enable/disable GPS
1.15
Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track — latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone,any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle — horizon to top - Distance off by vertical sextant angle — base to top - Distance off by vertical sextant angle — base to horizon - Distance off by two bow angles and distance run - Geographic Range computer Current Sailings - Find COG and SOG — from course and speed plus set and drift - Find course to steer — to make given COG, given set, drift, and speed - Find set and drift — from COG and SOG and course and speed - Find course to steer and speed — for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Checkout StarPilot training videos at http://www.starpilotllc.com/videos.htm Read StarPilot reviews here http://criticalalpha.blogspot.com/2010/03/celestial-navigation-with-iphone-touch.html
1.16
Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track — latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone,any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle — horizon to top - Distance off by vertical sextant angle — base to top - Distance off by vertical sextant angle — base to horizon - Distance off by two bow angles and distance run - Geographic Range computer Current Sailings - Find COG and SOG — from course and speed plus set and drift - Find course to steer — to make given COG, given set, drift, and speed - Find set and drift — from COG and SOG and course and speed - Find course to steer and speed — for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Checkout StarPilot training videos and reviews here http://www.starpilotllc.com/products/spip.htm In this version updated for iOS 4.2 and made transition from night/day/gps viewing simpler.
1.17
Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track — latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone,any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle — horizon to top - Distance off by vertical sextant angle — base to top - Distance off by vertical sextant angle — base to horizon - Distance off by two bow angles and distance run - Geographic Range computer Current Sailings - Find COG and SOG — from course and speed plus set and drift - Find course to steer — to make given COG, given set, drift, and speed - Find set and drift — from COG and SOG and course and speed - Find course to steer and speed — for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Checkout StarPilot training videos and reviews here http://www.starpilotllc.com/products/spip.htm Compiled with iOS 4.3 SDK
1.18
Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track — latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone,any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle — horizon to top - Distance off by vertical sextant angle — base to top - Distance off by vertical sextant angle — base to horizon - Distance off by two bow angles and distance run - Geographic Range computer Current Sailings - Find COG and SOG — from course and speed plus set and drift - Find course to steer — to make given COG, given set, drift, and speed - Find set and drift — from COG and SOG and course and speed - Find course to steer and speed — for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Checkout StarPilot training videos and reviews here http://www.starpilotllc.com/products/spip.htm Application is now a universal binary compiled for iOS 6 which will take advantage of the larger screen size of the iPad and retina display. The app also works on iPhone 5. A bug was fixed in the add times piloting function where times with seconds larger than 50 seconds were displayed incorrectly.
1.19
Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track — latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone,any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle — horizon to top - Distance off by vertical sextant angle — base to top - Distance off by vertical sextant angle — base to horizon - Distance off by two bow angles and distance run - Geographic Range computer Current Sailings - Find COG and SOG — from course and speed plus set and drift - Find course to steer — to make given COG, given set, drift, and speed - Find set and drift — from COG and SOG and course and speed - Find course to steer and speed — for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Checkout StarPilot training videos and reviews here http://www.starpilotllc.com/products/spip.htm Application is now a universal binary compiled for iOS 6 which will take advantage of the larger screen size of the iPad and retina display. The app also works on iPhone 5. A bug was fixed in the add times piloting function where times with seconds larger than 50 seconds were displayed incorrectly. Piloting menu now works again.
1.20
Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track — latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone,any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle — horizon to top - Distance off by vertical sextant angle — base to top - Distance off by vertical sextant angle — base to horizon - Distance off by two bow angles and distance run - Geographic Range computer Current Sailings - Find COG and SOG — from course and speed plus set and drift - Find course to steer — to make given COG, given set, drift, and speed - Find set and drift — from COG and SOG and course and speed - Find course to steer and speed — for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Checkout StarPilot training videos and reviews here http://www.starpilotllc.com/products/spip.htm Application is now a universal binary compiled for iOS 6 which will take advantage of the larger screen size of the iPad and retina display. The app also works on iPhone 5. Tabs now work on iPhone5 and iPod 5th generation. fixed bug in add times
2.0
Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track — latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone,any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle — horizon to top - Distance off by vertical sextant angle — base to top - Distance off by vertical sextant angle — base to horizon - Distance off by two bow angles and distance run - Geographic Range computer Current Sailings - Find COG and SOG — from course and speed plus set and drift - Find course to steer — to make given COG, given set, drift, and speed - Find set and drift — from COG and SOG and course and speed - Find course to steer and speed — for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Checkout StarPilot training videos and reviews here http://www.starpilotllc.com/products/spip.htm Updated for iOS 7. Great Circle computations through Long 0 now continue through where as before would stop at 0.
2.01
Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track — latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone,any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle — horizon to top - Distance off by vertical sextant angle — base to top - Distance off by vertical sextant angle — base to horizon - Distance off by two bow angles and distance run - Geographic Range computer Current Sailings - Find COG and SOG — from course and speed plus set and drift - Find course to steer — to make given COG, given set, drift, and speed - Find set and drift — from COG and SOG and course and speed - Find course to steer and speed — for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Checkout StarPilot training videos and reviews here http://www.starpilotllc.com/products/spip.htm Updated for iOS 7. Great Circle computations through Long 0 now continue through where as before would stop at 0. redid layout on input controllers to accommodate older devices with smaller screens.
2.02
Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track — latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone,any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle — horizon to top - Distance off by vertical sextant angle — base to top - Distance off by vertical sextant angle — base to horizon - Distance off by two bow angles and distance run - Geographic Range computer Current Sailings - Find COG and SOG — from course and speed plus set and drift - Find course to steer — to make given COG, given set, drift, and speed - Find set and drift — from COG and SOG and course and speed - Find course to steer and speed — for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Checkout StarPilot training videos and reviews here http://www.starpilotllc.com/products/spip.htm Updated for iOS 8.
2.03
Special Celestial Functions - Latitude and Longitude by Meridian passage - Latitude by Polaris sighting - High precision Azimuth of Polaris for surveying or compass checks - Recover lost GMT using unique Lunar distance analyzer - Compass calibration via sun shadow method or ship's pelorus - Sight reduction by external almanac data bypasses internal almanac for - Literal checking of textbook problems. Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone, any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle horizon to top - Distance off by vertical sextant angle base to top - Distance off by vertical sextant angle base to horizon - Distance off by two bow angles and distance run - Geographic Range computer - Numerical solutions to running fixes (PC only) - Numerical solutions to 3-point sextant fixes for precision PC piloting Current Sailings - Find COG and SOG from course and speed plus set and drift - Find course to steer to make given COG, given set, drift, and speed - Find set and drift from COG and SOG and course and speed - Find course to steer and speed for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Magnetic Var tables updated for 2015-2020
2.04
Special Celestial Functions - Latitude and Longitude by Meridian passage - Latitude by Polaris sighting - High precision Azimuth of Polaris for surveying or compass checks - Recover lost GMT using unique Lunar distance analyzer - Compass calibration via sun shadow method or ship's pelorus - Sight reduction by external almanac data bypasses internal almanac for - Literal checking of textbook problems. Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone, any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle horizon to top - Distance off by vertical sextant angle base to top - Distance off by vertical sextant angle base to horizon - Distance off by two bow angles and distance run - Geographic Range computer - Numerical solutions to running fixes (PC only) - Numerical solutions to 3-point sextant fixes for precision PC piloting Current Sailings - Find COG and SOG from course and speed plus set and drift - Find course to steer to make given COG, given set, drift, and speed - Find set and drift from COG and SOG and course and speed - Find course to steer and speed for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Magnetic Var tables updated for 2015-2020
2.05
Special Celestial Functions - Latitude and Longitude by Meridian passage - Latitude by Polaris sighting - High precision Azimuth of Polaris for surveying or compass checks - Recover lost GMT using unique Lunar distance analyzer - Compass calibration via sun shadow method or ship's pelorus - Sight reduction by external almanac data bypasses internal almanac for - Literal checking of textbook problems. Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone, any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle horizon to top - Distance off by vertical sextant angle base to top - Distance off by vertical sextant angle base to horizon - Distance off by two bow angles and distance run - Geographic Range computer - Numerical solutions to running fixes (PC only) - Numerical solutions to 3-point sextant fixes for precision PC piloting Current Sailings - Find COG and SOG from course and speed plus set and drift - Find course to steer to make given COG, given set, drift, and speed - Find set and drift from COG and SOG and course and speed - Find course to steer and speed for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Magnetic Var tables updated for 2015-2020 Compiled agains iOS 9.2 SDK
3.0.0
Updated the world magnetic model to 2020.
3.0.1
We've fixed a bug when reviewing sights and using archived sights.
3.0.2
We've fixed a display issue where a control's color was the same as the background, fixed some missing icons, and fixed some bugs.
3.0.3
We've found that in Dark mode the app does not display properly. While we are fixing this problem, we have this build which is always in Light mode.
3.0.4
We've been busy fixing bugs and making the app better!
3.0.5
We've updated the magnetic deviation model for 2025, and fixed some minor typos and bugs in the app.
3.0.6
We've fixed a bug that got past us in the last build. Now the sight planner again shows you the names of the objects in the sky!
3.0.7 · 16 Mar 2025
We've fixed a mistake that caused the user-entered settings to fail to save.

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Last verified: 31 Jul 2026
Sources: App Store

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      "url": "https://is1-ssl.mzstatic.com/image/thumb/PurpleSource114/v4/cf/55/eb/cf55ebc7-37d5-c820-8660-d871953e031f/a2990b31-2aaa-4435-80e5-0d530aac2a87_iPhone_Xs_13.6_Sunrise.png/1242x1600bb.jpg",
      "store": "apple",
      "platform": "iphone",
      "alt": "StarPilot iphone screenshot 6"
    },
    {
      "url": "https://is1-ssl.mzstatic.com/image/thumb/PurpleSource124/v4/16/9f/b0/169fb083-562b-d31b-4454-20597d4415b7/a5aa1b8d-7a54-44ae-b9f1-b63465226734_iPhone_Xs_13.6_Moonrise.png/1242x1600bb.jpg",
      "store": "apple",
      "platform": "iphone",
      "alt": "StarPilot iphone screenshot 7"
    },
    {
      "url": "https://is1-ssl.mzstatic.com/image/thumb/PurpleSource124/v4/9e/ed/95/9eed9554-f849-219a-6fc1-e1f3336cc82b/1daaa902-14d0-4317-b86b-35a7dcf068cc_iPhone_Xs_13.6_-_SIght_Planner.png/1242x1600bb.jpg",
      "store": "apple",
      "platform": "iphone",
      "alt": "StarPilot iphone screenshot 8"
    },
    {
      "url": "https://is1-ssl.mzstatic.com/image/thumb/PurpleSource124/v4/9a/24/cc/9a24cc1b-f44a-b42c-cccd-4455c9555350/0cacc5b4-a5c2-4ada-b00b-aaeaddf4946a_iPhone_Xs_13.6_-_Sky_Plot.png/1242x1600bb.jpg",
      "store": "apple",
      "platform": "iphone",
      "alt": "StarPilot iphone screenshot 9"
    }
  ],
  "ratings": [
    {
      "store": "apple",
      "average": 4.9,
      "count": 8,
      "market": "es",
      "observed_at": "2026-07-31",
      "reviews": [
        {
          "rating": 5,
          "title": "Best in class",
          "body": "As a professional US navy navigator I've used this app daily for at least 7 years. First on a TI89 calculator, then on iPhones starting with a 4s when that was new. Now on a 7 Plus. Makes my work easier and would be lost without it. The U/I may not be as polished as an app from Apple but it certainly does the job. Have never had a single crash or malfunction. Paid once for the app years ago and have benefited from regular updates. It is the only Nav app I recommend to other officers and cadets.",
          "author": "KhunJohn",
          "date": "31 Jul 2026"
        },
        {
          "rating": 5,
          "title": "iCloud Syncing",
          "body": "Overall great tool. Would be great if you could sync the Sight Archive to the cloud so that sights entered on iPhone could be accessed from iPad or vice versa.",
          "author": "ACN1",
          "date": "31 Jul 2026"
        },
        {
          "rating": 5,
          "title": "Waiting for any updates",
          "body": "I'm using Starpilot for taking gyro errors and position fixing frequently. It's giving a very precise figures and very reliable and can be used for navigation on big vessels. I'm recommending this app for all navigators, at the moment it's the best one. But it will be great to have a features such as : printing of determined position by dead reckoning and observed position. At least possibility to save it and then to print manually from album or whatever. Also will be nice to have an option to take a position and time fix automatically by pushbutton on taking a sight! A little improvement in a drawing of chart mercator's scale and observed position will be nice(sometimes very hard to read something there and not a perfect tool for zooming). Will be nice to include possibility of reviewing of daily Almanac and associated pages for manual calculations(useful for practical navigators for improving skills). Thanks, and waiting for updates! If will be any improvements I'll recomend and spread between many of my iPhone-users and navigators this great application! Good luck!",
          "author": "Oleg Odzemok",
          "date": "31 Jul 2026"
        },
        {
          "rating": 5,
          "title": "Starpilot on Antarctic Voyage",
          "body": "The Star Pilot package is absolutely fantastic. I have had the good fortune to complete two voyages across the South Atlantic, the first in the yacht Pelagic Australis and the second via Antarctica in the three masted barque Europa, both were hugely enjoyable voyages. Throughout both voyages I took sun, moon and star sights whenever possible, instead of dreading getting out all the tables I had a position within minutes of taking the final sight thanks entirely to the Star Pilot software installed on a Ti 89. This has huge advantages over a laptop as the skipper does mind if you leave it around the chart table and it is much easier to keep safe and dry. The satisfaction of consistently getting positions within 10 miles of the GPS is very satisfying but on a two month voyage there is also a great deal of pleasure to be gained in planning the star sights each day and entering the results in the log, it is a great way to learn more about the our universe. There are other navigational calcs as well and even though I don't need the rhum line course from Cowes to Lymington I still take the Star Pilot on my coastal cruises. Excellent piece of kit. Many thanks, Ken Barker",
          "author": "sailomatic",
          "date": "31 Jul 2026"
        },
        {
          "rating": 5,
          "title": "Great Professional tool",
          "body": "The Starpilot iphone/ipod program is a well made celestial navigation application for the professional mariner. I have made a number of sea passages using the app for iphone and have found it very useful, well designed, and fun to use. No matter what your level of involvement is with celestial navigation (C-Nav), from just doing a few azimuths or amplitudes to check your vessel's compass to doing full days worth of celestial navigation, this program has it all covered. For me it puts the fun back into C-nav by removing almost all of the tedious number crunching and calculation errors (human) that can go along with using the publications and I have found the results to be highly accurate. I do not recommend that someone preparing for professional testing/licensing use this program as the sole means of learning Celestial Navigation. For that there is no substitute for learning to use the publications in this situation. Though, it could be used as a way to check your work. One advantage I can see this App would have onboard a small vessel is the precious space saved by the reduction of publications needed to do C-Nav. Another advantage that using this app on an iphone or ipod touch has is that the device is backlit so you can do your calculation on a dimly lit bridge or chartroom without having to hold a flashlight to see your work, ruining your night vision. The program is well designed and layed out. But, Don’t be fooled though, it will take some time to learn your way around and get your bearings. But, I would think this would be expected based on the complexity of c-nav and the number is different uses the program has. After playing around with it a bit and taking a few sights most people should have no problem with it. Also the manual is built into the program under the “help” option. The creator of this app seems to be very passionate about his product. I wrote to him to make a suggestion about the Starpilot program and within minutes of hitting the send button I had a reply from him. I strongly recommend this app.",
          "author": "promarPT",
          "date": "31 Jul 2026"
        }
      ]
    }
  ],
  "privacy": [
    {
      "store": "apple",
      "declarations": [
        {
          "title": "Data Not Collected",
          "detail": "",
          "source": "Developer declared"
        }
      ],
      "accessibility": []
    }
  ],
  "changes": [
    {
      "store": "apple",
      "version": "1.09",
      "released_at": null,
      "notes": "Fixed a defect in review sights where limb of sun/moon was not being displayed correctly. Moved Hs to top of data entry form to make it easier to enter information when doing consecutive sights."
    },
    {
      "store": "apple",
      "version": "1.10",
      "released_at": null,
      "notes": "Updated help files Fixed spelling error in one menu A printable version of the StarPilot help file is now available for download from our website at www.starpilotllc.com"
    },
    {
      "store": "apple",
      "version": "1.11",
      "released_at": null,
      "notes": "StarPilot youtube training videos are now available. http://www.starpilotllc.com/videos.htm This version fixes the following. 1. AM/PM Twilight segmented control in sight planner 2. In settings Dest Lon had a N/S designator instead of E/W 3. added the ability to query long at arbitrary lat in the rhumb line computation to aid in transfering rhumb line between charts. 4. updated documentation accordingly."
    },
    {
      "store": "apple",
      "version": "1.12",
      "released_at": null,
      "notes": "StarPilot youtube training videos are now available. http://www.starpilotllc.com/videos.htm This version fixes the following. 1. Error in the 'UT from known position\" utility."
    },
    {
      "store": "apple",
      "version": "1.14",
      "released_at": null,
      "notes": "- updated pdf manual to include new features and missing settings section - update html help files to include new features - fixed bug in add times - added nighttime viewing - Magnetic Variation Epoch expanded from 2010-2015 to 2000-2015 - added GPS functionality to fix by computation and to the data entry form. - removed memory leak in fix by computation. - added GPS console to utilities menu - added StarPilot settings bundle with switch to enable/disable GPS"
    },
    {
      "store": "apple",
      "version": "1.15",
      "released_at": null,
      "notes": "Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track — latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone,any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle — horizon to top - Distance off by vertical sextant angle — base to top - Distance off by vertical sextant angle — base to horizon - Distance off by two bow angles and distance run - Geographic Range computer Current Sailings - Find COG and SOG — from course and speed plus set and drift - Find course to steer — to make given COG, given set, drift, and speed - Find set and drift — from COG and SOG and course and speed - Find course to steer and speed — for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Checkout StarPilot training videos at http://www.starpilotllc.com/videos.htm Read StarPilot reviews here http://criticalalpha.blogspot.com/2010/03/celestial-navigation-with-iphone-touch.html"
    },
    {
      "store": "apple",
      "version": "1.16",
      "released_at": null,
      "notes": "Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track — latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone,any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle — horizon to top - Distance off by vertical sextant angle — base to top - Distance off by vertical sextant angle — base to horizon - Distance off by two bow angles and distance run - Geographic Range computer Current Sailings - Find COG and SOG — from course and speed plus set and drift - Find course to steer — to make given COG, given set, drift, and speed - Find set and drift — from COG and SOG and course and speed - Find course to steer and speed — for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Checkout StarPilot training videos and reviews here http://www.starpilotllc.com/products/spip.htm In this version updated for iOS 4.2 and made transition from night/day/gps viewing simpler."
    },
    {
      "store": "apple",
      "version": "1.17",
      "released_at": null,
      "notes": "Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track — latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone,any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle — horizon to top - Distance off by vertical sextant angle — base to top - Distance off by vertical sextant angle — base to horizon - Distance off by two bow angles and distance run - Geographic Range computer Current Sailings - Find COG and SOG — from course and speed plus set and drift - Find course to steer — to make given COG, given set, drift, and speed - Find set and drift — from COG and SOG and course and speed - Find course to steer and speed — for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Checkout StarPilot training videos and reviews here http://www.starpilotllc.com/products/spip.htm Compiled with iOS 4.3 SDK"
    },
    {
      "store": "apple",
      "version": "1.18",
      "released_at": null,
      "notes": "Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track — latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone,any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle — horizon to top - Distance off by vertical sextant angle — base to top - Distance off by vertical sextant angle — base to horizon - Distance off by two bow angles and distance run - Geographic Range computer Current Sailings - Find COG and SOG — from course and speed plus set and drift - Find course to steer — to make given COG, given set, drift, and speed - Find set and drift — from COG and SOG and course and speed - Find course to steer and speed — for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Checkout StarPilot training videos and reviews here http://www.starpilotllc.com/products/spip.htm Application is now a universal binary compiled for iOS 6 which will take advantage of the larger screen size of the iPad and retina display. The app also works on iPhone 5. A bug was fixed in the add times piloting function where times with seconds larger than 50 seconds were displayed incorrectly."
    },
    {
      "store": "apple",
      "version": "1.19",
      "released_at": null,
      "notes": "Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track — latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone,any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle — horizon to top - Distance off by vertical sextant angle — base to top - Distance off by vertical sextant angle — base to horizon - Distance off by two bow angles and distance run - Geographic Range computer Current Sailings - Find COG and SOG — from course and speed plus set and drift - Find course to steer — to make given COG, given set, drift, and speed - Find set and drift — from COG and SOG and course and speed - Find course to steer and speed — for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Checkout StarPilot training videos and reviews here http://www.starpilotllc.com/products/spip.htm Application is now a universal binary compiled for iOS 6 which will take advantage of the larger screen size of the iPad and retina display. The app also works on iPhone 5. A bug was fixed in the add times piloting function where times with seconds larger than 50 seconds were displayed incorrectly. Piloting menu now works again."
    },
    {
      "store": "apple",
      "version": "1.20",
      "released_at": null,
      "notes": "Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track — latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone,any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle — horizon to top - Distance off by vertical sextant angle — base to top - Distance off by vertical sextant angle — base to horizon - Distance off by two bow angles and distance run - Geographic Range computer Current Sailings - Find COG and SOG — from course and speed plus set and drift - Find course to steer — to make given COG, given set, drift, and speed - Find set and drift — from COG and SOG and course and speed - Find course to steer and speed — for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Checkout StarPilot training videos and reviews here http://www.starpilotllc.com/products/spip.htm Application is now a universal binary compiled for iOS 6 which will take advantage of the larger screen size of the iPad and retina display. The app also works on iPhone 5. Tabs now work on iPhone5 and iPod 5th generation. fixed bug in add times"
    },
    {
      "store": "apple",
      "version": "2.0",
      "released_at": null,
      "notes": "Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track — latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone,any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle — horizon to top - Distance off by vertical sextant angle — base to top - Distance off by vertical sextant angle — base to horizon - Distance off by two bow angles and distance run - Geographic Range computer Current Sailings - Find COG and SOG — from course and speed plus set and drift - Find course to steer — to make given COG, given set, drift, and speed - Find set and drift — from COG and SOG and course and speed - Find course to steer and speed — for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Checkout StarPilot training videos and reviews here http://www.starpilotllc.com/products/spip.htm Updated for iOS 7. Great Circle computations through Long 0 now continue through where as before would stop at 0."
    },
    {
      "store": "apple",
      "version": "2.01",
      "released_at": null,
      "notes": "Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track — latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone,any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle — horizon to top - Distance off by vertical sextant angle — base to top - Distance off by vertical sextant angle — base to horizon - Distance off by two bow angles and distance run - Geographic Range computer Current Sailings - Find COG and SOG — from course and speed plus set and drift - Find course to steer — to make given COG, given set, drift, and speed - Find set and drift — from COG and SOG and course and speed - Find course to steer and speed — for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Checkout StarPilot training videos and reviews here http://www.starpilotllc.com/products/spip.htm Updated for iOS 7. Great Circle computations through Long 0 now continue through where as before would stop at 0. redid layout on input controllers to accommodate older devices with smaller screens."
    },
    {
      "store": "apple",
      "version": "2.02",
      "released_at": null,
      "notes": "Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track — latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone,any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle — horizon to top - Distance off by vertical sextant angle — base to top - Distance off by vertical sextant angle — base to horizon - Distance off by two bow angles and distance run - Geographic Range computer Current Sailings - Find COG and SOG — from course and speed plus set and drift - Find course to steer — to make given COG, given set, drift, and speed - Find set and drift — from COG and SOG and course and speed - Find course to steer and speed — for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Checkout StarPilot training videos and reviews here http://www.starpilotllc.com/products/spip.htm Updated for iOS 8."
    },
    {
      "store": "apple",
      "version": "2.03",
      "released_at": null,
      "notes": "Special Celestial Functions - Latitude and Longitude by Meridian passage - Latitude by Polaris sighting - High precision Azimuth of Polaris for surveying or compass checks - Recover lost GMT using unique Lunar distance analyzer - Compass calibration via sun shadow method or ship's pelorus - Sight reduction by external almanac data bypasses internal almanac for - Literal checking of textbook problems. Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone, any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle horizon to top - Distance off by vertical sextant angle base to top - Distance off by vertical sextant angle base to horizon - Distance off by two bow angles and distance run - Geographic Range computer - Numerical solutions to running fixes (PC only) - Numerical solutions to 3-point sextant fixes for precision PC piloting Current Sailings - Find COG and SOG from course and speed plus set and drift - Find course to steer to make given COG, given set, drift, and speed - Find set and drift from COG and SOG and course and speed - Find course to steer and speed for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Magnetic Var tables updated for 2015-2020"
    },
    {
      "store": "apple",
      "version": "2.04",
      "released_at": null,
      "notes": "Special Celestial Functions - Latitude and Longitude by Meridian passage - Latitude by Polaris sighting - High precision Azimuth of Polaris for surveying or compass checks - Recover lost GMT using unique Lunar distance analyzer - Compass calibration via sun shadow method or ship's pelorus - Sight reduction by external almanac data bypasses internal almanac for - Literal checking of textbook problems. Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone, any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle horizon to top - Distance off by vertical sextant angle base to top - Distance off by vertical sextant angle base to horizon - Distance off by two bow angles and distance run - Geographic Range computer - Numerical solutions to running fixes (PC only) - Numerical solutions to 3-point sextant fixes for precision PC piloting Current Sailings - Find COG and SOG from course and speed plus set and drift - Find course to steer to make given COG, given set, drift, and speed - Find set and drift from COG and SOG and course and speed - Find course to steer and speed for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Magnetic Var tables updated for 2015-2020"
    },
    {
      "store": "apple",
      "version": "2.05",
      "released_at": null,
      "notes": "Special Celestial Functions - Latitude and Longitude by Meridian passage - Latitude by Polaris sighting - High precision Azimuth of Polaris for surveying or compass checks - Recover lost GMT using unique Lunar distance analyzer - Compass calibration via sun shadow method or ship's pelorus - Sight reduction by external almanac data bypasses internal almanac for - Literal checking of textbook problems. Route planning utilities - Rhumb line course and distance with automatic comparison to GC - Great circle course and distance - Great circle waypoints - Composite sailing track latitude limited great circle route - Traverse Table computations - DR computations by speed and time or by log readings - Long-distance ETA computes local time and date of arrival, any time zone, any longitude, any date - Distance outputs to 2 decimal places for DGPS comparisons Piloting utilities - Distance off by vertical sextant angle horizon to top - Distance off by vertical sextant angle base to top - Distance off by vertical sextant angle base to horizon - Distance off by two bow angles and distance run - Geographic Range computer - Numerical solutions to running fixes (PC only) - Numerical solutions to 3-point sextant fixes for precision PC piloting Current Sailings - Find COG and SOG from course and speed plus set and drift - Find course to steer to make given COG, given set, drift, and speed - Find set and drift from COG and SOG and course and speed - Find course to steer and speed for given ETA across current Miscellaneous Utilities - Convenient Speed-time-distance computer - Find true wind from apparent wind - Interpolate Tide height between highs and lows - Interpolate Current speed between peak and slack - Compute Magnetic Variation Magnetic Var tables updated for 2015-2020 Compiled agains iOS 9.2 SDK"
    },
    {
      "store": "apple",
      "version": "3.0.0",
      "released_at": null,
      "notes": "Updated the world magnetic model to 2020."
    },
    {
      "store": "apple",
      "version": "3.0.1",
      "released_at": null,
      "notes": "We've fixed a bug when reviewing sights and using archived sights."
    },
    {
      "store": "apple",
      "version": "3.0.2",
      "released_at": null,
      "notes": "We've fixed a display issue where a control's color was the same as the background, fixed some missing icons, and fixed some bugs."
    }
  ],
  "alternatives": [
    {
      "app_id": 1569880598,
      "name": "Celestial Nav",
      "url": "https://appcorpus.com/apps/celestial-nav-1569880598",
      "reason": "Same category + similar ratings"
    }
  ],
  "evidence_summary": {
    "index_state": "S1",
    "evidence_level": 1,
    "level_label": "Live store listing",
    "indexable": true,
    "last_verified_at": "2026-07-31",
    "unknown_fields": [
      "Independent summary has not been published yet."
    ],
    "sources": [
      "App Store"
    ]
  },
  "availability_markets": {
    "live": [
      "us"
    ],
    "selected": "es",
    "note": "No LIVE observation for ES yet."
  },
  "feature_events": {
    "events": []
  },
  "features_slice": {
    "plans": [],
    "features": [],
    "unknown_features": [
      "family_sharing"
    ],
    "data_cutoff": "31 Jul 2026"
  }
}