Neptune: Navigation Rules

Name: Neptune: Navigation Rules
Rating: 5.0 (14 reviews)
Author: Brice Brown

by Brice Brown

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: Free to download

Categories and search queries

Official categories

Education
Navigation

AppCorpus categories

Key functions

Function	Availability	Access	Scope	Evidence
Free app	Yes	Free	—	Store published
Game Center	Yes	Free	App Store	Store published

Screens

No screenshots collected yet.

Pricing & paywalls

App Store

Free

Last verified 31 Jul 2026

Ratings & reviews

App Store

5.0 14 ratings · App Store

5/5Wow
Seems like every rules of the road costs money but this makes sense. The AI and features are so worth it, especially being able to highlight the book in the app and save pictures of my notes. Can’t wait to use it more

Mike honcho Mike · 31 Jul 2026
5/5Absolutely Worth It
Hands down one of the best COLREGS prep apps available. Straightforward, well-designed, and actually helps you understand the rules instead of just memorizing answers. Huge help for exams and real-world application.

Sharonie2202 · 31 Jul 2026
5/5Great App for Studying!
Strikes a really good balance between being easy to navigate and still having a good depth of material. A must-download for anyone looking to improve their exam scores!

supsirc · 31 Jul 2026
5/5Great study tool
This is a great tool to use for studying rules of the road. You are able to customize your study sessions and gain corrective feedback. This should be a no-brainer download for any SWO

FightOnNavy · 31 Jul 2026
5/5Best App Out Now
Absolute lifesaver all around. Would definitely recommend!!

Navyday450 · 31 Jul 2026

Privacy & accessibility

App Store

Privacy

Data Linked to You — Analytics — Diagnostics — Crash Data Developer declared
Data Linked to You — Analytics — Diagnostics — Other Diagnostic Data Developer declared
Data Linked to You — Analytics — Diagnostics — Performance Data Developer declared
Data Linked to You — App Functionality — Contact Info — Email Address Developer declared
Data Linked to You — App Functionality — Identifiers — User ID Developer declared
Data Linked to You — App Functionality — User Content — Customer Support Developer declared
Data Linked to You — App Functionality — User Content — Other User Content Developer declared
Data Linked to You — App Functionality — User Content — Photos or Videos Developer declared
Data Linked to You — Contact Info Developer declared
Data Linked to You — Diagnostics Developer declared
Data Linked to You — Identifiers Developer declared
Data Linked to You — User Content Developer declared

Show more Show less

Accessibility

Dark Interface — SUPPORTED Store published

Versions

App Store

1.0
1.0.3
Optimized account syncing to work faster.
1.0.4
Added 500 maritime collision case studies to the AI's database Added Neptune to the home screen and refined AI responses Bug Fixes
1.0.5
Added Game Center for leaderboards and achievements Bug Fixes
1.0.6
Improvements and patched pipes
1.1.0
+ New: 3D Vessel Trainer Master Lights & Shapes with our new interactive 3D models. Rotate vessels and toggle Day/Night modes to visualize complex scenarios instantly. + Fixes & Improvements
1.2.0
+ New Feature: Verbatim Repeat back cards for studying the key words of COLREG Rules + Upgraded progression tracking + Bug Fixes and UI Changes
1.2.2 · 19 Mar 2026
What is New Spaced Repetition (SM-2) - Neptune now schedules reviews based on your performance, surfacing weak topics more frequently Progress Dashboard - New mastery rings card showing your status across Rules, Lights, and Verbatim at a glance Mixed Daily Challenge - Daily sessions now combine COLREGs rules, verbatim recall, and vessel light questions Multi-Diagram Swipe Viewer - Questions can display multiple diagrams; swipe through them full-screen Unified Test Summary - Consistent end-of-session summary screen across all quiz types with per-topic breakdown Resume Verbatim Sessions - Pick up in-progress verbatim tests where you left off Flag Questions - Flag any question or rule during a session to review later New Vessel Lights - Added 12m and 7m power-driven vessel configurations; hull display enabled in the night viewer New Achievements - Verbatim Master and Night ID badges now trackable Study Walkthrough - Guided onboarding flow for new users UI Improvements - Redesigned picker sheets, smoother scroll behavior, better icons throughout Bug Fixes - Fixed stale question citation rows persisting after an app update - Fixed progress data not rebuilding correctly after deleting a session - Fixed sync errors caused by missing SM-2 columns on older installs - Fixed progress history not backfilling from older test sessions after sync - Fixed date normalization inconsistencies in the sync service - Fixed inline answer feedback incorrectly appearing in non fill-in exercises - Fixed null safety crashes across several study and progress screens - Fixed diagram colors and references loading incorrectly in the rule detail view

Show more Show less

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

Report a correction

Use this page with an AI agent

AppCorpus MCP gives your agent current app data, prices, screens, features and sources.

Example prompt

Compare this app with its closest alternatives.

View JSON

GET /api/v3/apps/6756641315

{
  "app_id": 6756641315,
  "canonical_url": "https://appcorpus.com/apps/neptune-navigation-rules-6756641315",
  "identity": {
    "name": "Neptune: Navigation Rules",
    "slug": "neptune-navigation-rules",
    "developer": {
      "name": "Brice Brown",
      "url": "https://appcorpus.com/developers/brice-brown-developer_89cf1f3f63e8f63786dfbc10f873e240"
    },
    "icon_url": "https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/1c/47/fd/1c47fdac-43c2-d5d2-1ce7-b6eb64042424/Neptune-0-1x_U007epad-0-1-0-85-220-0.png/512x512bb.jpg",
    "stores": [
      "apple"
    ],
    "platforms": [
      "iphone",
      "ipad"
    ],
    "status": {
      "state": "active",
      "label": "Active",
      "last_checked": "2026-07-31",
      "last_checked_label": "31 Jul 2026",
      "banner": null,
      "region_note": null
    }
  },
  "listings": [
    {
      "store": "apple",
      "status": "ACTIVE",
      "url": "https://apps.apple.com/us/app/neptune-navigation-rules/id6756641315?uo=4",
      "rating": 5.0,
      "rating_count": 14,
      "formatted_price": "Free",
      "is_free": true,
      "has_iap": false,
      "has_subscription": false,
      "version": "1.2.2",
      "updated": "2026-03-19",
      "currency": "USD"
    }
  ],
  "summary": {
    "one_liner": null,
    "summary": null,
    "best_for": [],
    "not_for": [],
    "status": "fallback",
    "at_a_glance": [
      "Free to download"
    ]
  },
  "categories": {
    "official": [
      "Education",
      "Navigation"
    ],
    "appcorpus": [
      {
        "category_id": "education",
        "label": "Education",
        "url": "https://appcorpus.com/categories/education"
      },
      {
        "category_id": "navigation",
        "label": "Navigation",
        "url": "https://appcorpus.com/categories/navigation"
      }
    ]
  },
  "use_cases": [],
  "features": [
    {
      "capability_id": "free_app",
      "label": "Free app",
      "availability": "yes",
      "access_level": "free",
      "scope": null,
      "evidence": "Store published"
    },
    {
      "capability_id": "game_center",
      "label": "Game Center",
      "availability": "yes",
      "access_level": "free",
      "scope": "App Store",
      "evidence": "Store published"
    }
  ],
  "pricing": [
    {
      "store": "apple",
      "formatted_price": "Free",
      "is_free": true,
      "has_iap": false,
      "has_subscription": false,
      "currency": "USD",
      "market": "us",
      "last_verified": "2026-07-31",
      "rows": [
        "Free"
      ]
    }
  ],
  "screens": [],
  "ratings": [
    {
      "store": "apple",
      "average": 5.0,
      "count": 14,
      "market": "us",
      "observed_at": "2026-07-31",
      "reviews": [
        {
          "rating": 5,
          "title": "Wow",
          "body": "Seems like every rules of the road costs money but this makes sense. The AI and features are so worth it, especially being able to highlight the book in the app and save pictures of my notes. Can’t wait to use it more",
          "author": "Mike honcho Mike",
          "date": "31 Jul 2026"
        },
        {
          "rating": 5,
          "title": "Absolutely Worth It",
          "body": "Hands down one of the best COLREGS prep apps available. Straightforward, well-designed, and actually helps you understand the rules instead of just memorizing answers. Huge help for exams and real-world application.",
          "author": "Sharonie2202",
          "date": "31 Jul 2026"
        },
        {
          "rating": 5,
          "title": "Great App for Studying!",
          "body": "Strikes a really good balance between being easy to navigate and still having a good depth of material. A must-download for anyone looking to improve their exam scores!",
          "author": "supsirc",
          "date": "31 Jul 2026"
        },
        {
          "rating": 5,
          "title": "Great study tool",
          "body": "This is a great tool to use for studying rules of the road. You are able to customize your study sessions and gain corrective feedback. This should be a no-brainer download for any SWO",
          "author": "FightOnNavy",
          "date": "31 Jul 2026"
        },
        {
          "rating": 5,
          "title": "Best App Out Now",
          "body": "Absolute lifesaver all around. Would definitely recommend!!",
          "author": "Navyday450",
          "date": "31 Jul 2026"
        }
      ]
    }
  ],
  "privacy": [
    {
      "store": "apple",
      "declarations": [
        {
          "title": "Data Linked to You",
          "detail": "Analytics — Diagnostics — Crash Data",
          "source": "Developer declared"
        },
        {
          "title": "Data Linked to You",
          "detail": "Analytics — Diagnostics — Other Diagnostic Data",
          "source": "Developer declared"
        },
        {
          "title": "Data Linked to You",
          "detail": "Analytics — Diagnostics — Performance Data",
          "source": "Developer declared"
        },
        {
          "title": "Data Linked to You",
          "detail": "App Functionality — Contact Info — Email Address",
          "source": "Developer declared"
        },
        {
          "title": "Data Linked to You",
          "detail": "App Functionality — Identifiers — User ID",
          "source": "Developer declared"
        },
        {
          "title": "Data Linked to You",
          "detail": "App Functionality — User Content — Customer Support",
          "source": "Developer declared"
        },
        {
          "title": "Data Linked to You",
          "detail": "App Functionality — User Content — Other User Content",
          "source": "Developer declared"
        },
        {
          "title": "Data Linked to You",
          "detail": "App Functionality — User Content — Photos or Videos",
          "source": "Developer declared"
        },
        {
          "title": "Data Linked to You",
          "detail": "Contact Info",
          "source": "Developer declared"
        },
        {
          "title": "Data Linked to You",
          "detail": "Diagnostics",
          "source": "Developer declared"
        },
        {
          "title": "Data Linked to You",
          "detail": "Identifiers",
          "source": "Developer declared"
        },
        {
          "title": "Data Linked to You",
          "detail": "User Content",
          "source": "Developer declared"
        }
      ],
      "accessibility": [
        {
          "title": "Dark Interface",
          "detail": "SUPPORTED",
          "source": "Store published"
        }
      ]
    }
  ],
  "changes": [
    {
      "store": "apple",
      "version": "1.0",
      "released_at": null,
      "notes": ""
    },
    {
      "store": "apple",
      "version": "1.0.3",
      "released_at": null,
      "notes": "Optimized account syncing to work faster."
    },
    {
      "store": "apple",
      "version": "1.0.4",
      "released_at": null,
      "notes": "Added 500 maritime collision case studies to the AI's database Added Neptune to the home screen and refined AI responses Bug Fixes"
    },
    {
      "store": "apple",
      "version": "1.0.5",
      "released_at": null,
      "notes": "Added Game Center for leaderboards and achievements Bug Fixes"
    },
    {
      "store": "apple",
      "version": "1.0.6",
      "released_at": null,
      "notes": "Improvements and patched pipes"
    },
    {
      "store": "apple",
      "version": "1.1.0",
      "released_at": null,
      "notes": "+ New: 3D Vessel Trainer Master Lights & Shapes with our new interactive 3D models. Rotate vessels and toggle Day/Night modes to visualize complex scenarios instantly. + Fixes & Improvements"
    },
    {
      "store": "apple",
      "version": "1.2.0",
      "released_at": null,
      "notes": "+ New Feature: Verbatim Repeat back cards for studying the key words of COLREG Rules + Upgraded progression tracking + Bug Fixes and UI Changes"
    },
    {
      "store": "apple",
      "version": "1.2.2",
      "released_at": "2026-03-19",
      "notes": "What is New Spaced Repetition (SM-2) - Neptune now schedules reviews based on your performance, surfacing weak topics more frequently Progress Dashboard - New mastery rings card showing your status across Rules, Lights, and Verbatim at a glance Mixed Daily Challenge - Daily sessions now combine COLREGs rules, verbatim recall, and vessel light questions Multi-Diagram Swipe Viewer - Questions can display multiple diagrams; swipe through them full-screen Unified Test Summary - Consistent end-of-session summary screen across all quiz types with per-topic breakdown Resume Verbatim Sessions - Pick up in-progress verbatim tests where you left off Flag Questions - Flag any question or rule during a session to review later New Vessel Lights - Added 12m and 7m power-driven vessel configurations; hull display enabled in the night viewer New Achievements - Verbatim Master and Night ID badges now trackable Study Walkthrough - Guided onboarding flow for new users UI Improvements - Redesigned picker sheets, smoother scroll behavior, better icons throughout Bug Fixes - Fixed stale question citation rows persisting after an app update - Fixed progress data not rebuilding correctly after deleting a session - Fixed sync errors caused by missing SM-2 columns on older installs - Fixed progress history not backfilling from older test sessions after sync - Fixed date normalization inconsistencies in the sync service - Fixed inline answer feedback incorrectly appearing in non fill-in exercises - Fixed null safety crashes across several study and progress screens - Fixed diagram colors and references loading incorrectly in the rule detail view"
    }
  ],
  "alternatives": [],
  "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.",
      "Screenshots: not yet collected"
    ],
    "sources": [
      "App Store"
    ]
  },
  "availability_markets": {
    "live": [
      "us"
    ],
    "selected": "us",
    "note": null
  },
  "feature_events": {
    "events": []
  },
  "features_slice": {
    "plans": [
      {
        "code": "free",
        "label": "Free",
        "kind": "free",
        "status": "inferred",
        "prices": [],
        "trial": null
      }
    ],
    "features": [],
    "unknown_features": [],
    "data_cutoff": "31 Jul 2026"
  }
}