Density Altitude +

Name: Density Altitude +
Rating: 4.8 (1028 reviews)
Author: Rate Of Climb Industries

by Rate Of Climb Industries

iPhone · iPad

Active Last checked 31 Jul 2026

App Store ↗

Quick verdict

What it is: Store information collected; independent summary not yet available.
At a glance: $3.99

Categories and search queries

Official categories

Navigation
Utilities

AppCorpus categories

Key functions

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

Screens

No screenshots collected yet.

Pricing & paywalls

App Store

Price: $3.99

Last verified 31 Jul 2026

Ratings & reviews

App Store

4.8 1028 ratings · App Store

5/5Works well
Wanted something to quickly calculate DA so I could input into my ballistics shooting app. I know this is designed for pilots but I thought it worth the try. Non humid days, works well. High humidity it’s off. I know this app uses dry air formula so not knocking the app. Developer did mention other possible uses tho. To be able to manually enter values by turning off an automatic fill button would be great. DA is becoming a more widely used method on ballistic applications over the previous idea of entering elevation and temperatures. Thanks!!

Farabaugh · 31 Jul 2026
5/5Better GPS Accuracy
This has always been a great App, but depending on location, GPS altitude for me could sometimes be off. With this new App update, 2.6.3, it provides increased satellite accuracy. Every reading for me is now completely accurate, every single time. An excellent App now made better!

Koytch · 31 Jul 2026
5/5Great App but needs Apple Watch Widget
This app is great for its simplicity and ease of use. I also like how the App Store indicates that no data is collected from the app. I just wish it could integrate into the display for the Apple Watch as this is something I often reference when towing in the mountains.

57jfof · 31 Jul 2026
5/5Great app I like it!
I use it to backup my weather station data on my dyno as well as when I’m playing around with my car. 👍

Another EFI Tuner · 31 Jul 2026
5/5Great app
I really like this app. It works pretty good against my kestrel hand held weather station. I would like to see a tab for water grains in the air for the guys using it for drag racing

RF219 · 31 Jul 2026

Privacy & accessibility

App Store

Privacy

Data Not Collected Developer declared

Accessibility

No accessibility labels collected yet.

Versions

App Store

1.0
1.2
* Seamlessly integrates forecast.io weather data when in cell range * Higher contrast display * New icons for barometer and internet data shows where the data is coming from. * Seamlessly adapts to no-cell areas and older phones.
1.3
Now allows for separate Metric/Imperial units for height and pressure. You can now have pressure in hPa and altitude in ft, etc. Reach us at [email protected]. Follow us on Twitter at @DeepWeatherApp Thanks for your feedback and support!
1.4
- Now allows pressure, height and temperature units to all be set independently. For example, you can now use Celsius for temperature while using inHg for pressure, etc. - Updated for iOS 9 We love feedback! Please take a moment to rate us in the App Store, or email us at [email protected]. Thanks!
1.5
* New Temperature Nudge feature: Tap the forecast.io - derived temperature to override it with your own temperature observation. * Now displays the nearest locality if network is available. * Improved error message if GPS is disabled. Please take a moment to rate Density Altitude+ in the app store if you like it. It really helps! For support or feedback, reach us by email: [email protected], or on Facebook: RateOfClimbIndustries
1.5.1
Bug fix: App launch crash that would occur in certain geographic areas has been fixed. Thanks for all the great feedback! If you like Density Altitude+, leave a review in the app store. If you have comments or suggestions, we'd love to hear from you at [email protected].
1.6
* Completely redesigned to be even more easy to use! * Updated for the latest devices. Reach us at [email protected], @deepweatherapp on Twitter, or RateofClimbIndustries on Facebook!
2.0
The original, now better than ever: * Humidity is now considered in all calculations, making Density Altitude+ more accurate than most available density altitude reports, especially when humidity is high. * New: Native iPad app included! * New: Relative Density (RAD): Very useful for engine tuning and racing * New: Air Density in kg/m3 * New: Relative Humidity Thanks for the support and feedback! You can always reach us at [email protected]
2.1
- This version adds more calculated data helpful for racers and engine tuners: - Specific Air Density in grains per pound of dry air - Dyno Correction - Now has a scroll view to fit more data onto small screens Thanks for the great feedback! Email us anytime at [email protected]
2.2
* New Manual Mode feature: By default Density Altitude+ functions as a real-time instrument, showing you the current conditions where you are, using on-board sensors, weather data and a lot of physics. Version 2.2 adds a Manual mode which is useful for planning or trying out scenarios. Tap the slider icon in the top right of your screen to toggle Manual Mode on or off. Once in Manual Mode, you can set Altitude, Temperature, Dew Point, Station or Absolute Pressure and/or Altimeter Setting. The app will dynamically calculate all other values. Toggle back to Automatic Mode to get your local, current conditions. I always welcome feedback and feature requests. Contact me anytime through the email link in the settings menu, or at [email protected]
2.3
- New weather data source. Since the forecast.io weather API will be discontinued in January, I've done a lot of research to find the most suitable replacement going forward. This version uses Climacell which provides global, hyperlocal weather data. My hope is that it will provide even more accurate data. I've done a lot of testing, but let me know with the in-app feedback button if you have any issues. Thanks! Thanks for all the support, and reach me anytime at: [email protected]. You can also follow us on Instagram @rateofclimbindustries.
2.4
- New Sharing option in Settings - New Animations added in transitions - Other minor updates Reach me anytime at [email protected]. Follow us on Instagram and Facebook @rateofclimbindustries
2.5
- New weather source: Our previous weather information source (used for temperature and dew point) is unfortunately going offline. The good news is that we have upgraded to an even more accurate and feature-rich weather source, which will make some exciting new features possible that we're currently working on. Reach me anytime at [email protected] for support, questions or suggestions. Find us on Instagram @rateofclimbindustries
2.6
New Major Feature: Location Search! You can now compute the Density Altitude and all other atmospheric data at any point on earth, from anywhere on Earth! Either type in you location search or Long Press on any location on the map. Use this feature to see what conditions are at another location for educational purposes. Since calculations are based on weather data fetched from a weather API and not on actual physical readings, the results won't be as accurate as in the default "Instrument" mode, but will be as close as possible. The same goes for elevation data, which is based on an elevation API and not GPS altitude as it is in Instrument mode. Bug fix: Parts of the display were being clipped on iPhone 6s. This is now fixed. Improvement: General display polish Bug fix: humidity was sometimes not properly applied when certain units were chosen. This is now fixed. Improvement: Updated for iOS 15. Follow us on Instagram @RateOfClimbIndustries
2.6.1
Improvements to the way Location Service permissions are handled. App would in certain edge cases crash if Location Services were turned off and user tapped GPS Location button. This is now fixed. email us anytime at [email protected] Follow us on Instagram @rateofclimbindustries
2.6.2
- UI improvements Reach us any time at [email protected]. IG: @rateofclimbindustries Thanks for the support!
2.6.3
- Increased GPS accuracy in certain situations. This should make GPS elevation data more accurate in areas with obstructions, etc.
2.7
This version uses a new Elevation API provider since our previous Elevation API provider is shutting down. This only affects the location search feature, and accuracy should be even better! Follow us on Instagram @RateOfClimbIndustries. Thanks for the support!
2.8 · 9 Aug 2024
Bug fix: When using Density Altitude outside of cell service, Density Altitude+ now again correctly uses Onboard barometer. The issue was a recently added iOS privacy setting. If you're a current user and are still not prompted to allow the app to access the barometer, you can go into Settings->Privacy & Security->Motion & Fitness and enable access for Density Altitude+ there. Thanks for your support! Reach me at [email protected]

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Alternatives

FlightReady E6B — Same category + similar ratings

Availability by market

Data quality & evidence

Page completeness: Live store listing
Last verified: 31 Jul 2026
Sources: App Store

Independent summary has not been published yet.
Screenshots: not yet collected

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Compare Density Altitude + with FlightReady E6B.

View JSON

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          "author": "Koytch",
          "date": "31 Jul 2026"
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          "date": "31 Jul 2026"
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    },
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      "notes": "New Major Feature: Location Search! You can now compute the Density Altitude and all other atmospheric data at any point on earth, from anywhere on Earth! Either type in you location search or Long Press on any location on the map. Use this feature to see what conditions are at another location for educational purposes. Since calculations are based on weather data fetched from a weather API and not on actual physical readings, the results won't be as accurate as in the default \"Instrument\" mode, but will be as close as possible. The same goes for elevation data, which is based on an elevation API and not GPS altitude as it is in Instrument mode. Bug fix: Parts of the display were being clipped on iPhone 6s. This is now fixed. Improvement: General display polish Bug fix: humidity was sometimes not properly applied when certain units were chosen. This is now fixed. Improvement: Updated for iOS 15. Follow us on Instagram @RateOfClimbIndustries"
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      "notes": "Improvements to the way Location Service permissions are handled. App would in certain edge cases crash if Location Services were turned off and user tapped GPS Location button. This is now fixed. email us anytime at [email protected] Follow us on Instagram @rateofclimbindustries"
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      "notes": "This version uses a new Elevation API provider since our previous Elevation API provider is shutting down. This only affects the location search feature, and accuracy should be even better! Follow us on Instagram @RateOfClimbIndustries. Thanks for the support!"
    },
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      "notes": "Bug fix: When using Density Altitude outside of cell service, Density Altitude+ now again correctly uses Onboard barometer. The issue was a recently added iOS privacy setting. If you're a current user and are still not prompted to allow the app to access the barometer, you can go into Settings->Privacy & Security->Motion & Fitness and enable access for Density Altitude+ there. Thanks for your support! Reach me at [email protected]"
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  "alternatives": [
    {
      "app_id": 999497481,
      "name": "FlightReady E6B",
      "url": "https://appcorpus.com/apps/flightready-e6b-999497481",
      "reason": "Same category + similar ratings"
    }
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