Master USCG Navigation Rules with a comprehensive question bank and smart study features. Track your progress, practice for exams, and study offline to navigate with confidence.






249+ iOS apps curated and reviewed
Every iPhone needs a few good hms colregcards apps. We benchmark 249+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | — | Yes | Yes | Jun 2026 | |
| 2 | Free | 5.0★ (4) | No | No | Jul 2026 | |
| 3 | Free was $4.99 | 5.0★ (13) | No | No | Jul 2026 | |
| 4 | Free | — | Yes | No | Aug 2026 | |
| 5 | Free | 5.0★ (13) | No | Yes | Sep 2026 | |
| 6 | $4.99 | — | No | No | Aug 2026 | |
| 7 | Free | 5.0★ (1) | No | No | Sep 2026 | |
| 8 | Free | 5.0★ (2) | No | No | Aug 2026 |











Master USCG Navigation Rules with a comprehensive question bank and smart study features. Track your progress, practice for exams, and study offline to navigate with confidence.






Prepare for USCG COLREG and OOD exams with a comprehensive study system. Features AI tutoring, interactive 3D visuals for lights and shapes, and a complete question bank with intelligent test modes and progress tracking.




Monitor ship routes globally with real-time AIS tracking, detailed vessel information, and integrated weather forecasts. Understand port traffic and plan passages with live data on maritime activity.




Learn and practice sailing navigation rules with interactive 3D simulations. This app offers a didactic and fun approach to mastering collision avoidance and safe navigation on the water.


This app trains junior deck officers and watchstanders in essential radar watch skills, including contact evaluation, COLREGS classification, and generating contact reports. It features a live radar scope, generated scenarios for various navigation situations, and drills for recognition and maneuvering.


This free publication offers insights and professional development for marine navigators. It features articles on crucial topics like radar, ECDIS, and passage planning, with access to past editions.


Master nautical navigation rules with practice exams and a comprehensive rule book. Focus your learning by customizing tests based on question type, rule, and filter. Track your progress and review answers with detailed explanations.


This app provides professional marine navigation with official ENC charts and real-time weather data. It offers advanced instrument displays, alerts for restricted areas and fishing closures, and route planning capabilities for safe and informed voyages.




Learn seamanship and small-craft navigation with interactive diagrams and calculators. Practice plotting positions, understanding tides, and mastering navigation techniques. Includes a reference library for essential maritime knowledge.


Master maritime navigation rules with exam-style drills and custom quizzes. This app provides a comprehensive reference to COLREGS, helping users confidently recall regulations for exams and safe boating. Track progress and focus on weak areas for effective learning.




Master sailing terminology with this educational app. It offers a dictionary section for learning terms and a quiz section to test and expand your knowledge of sailing vocabulary.


Learn navigation rules with interactive flashcards. Covers IRPCS, navigation marks, and lights. Additional card packs are available for purchase to expand your knowledge.




This app provides comprehensive tools for marine navigation, including real-time ship movement, route planning, and advanced sailing calculations. It also offers features for collision avoidance, maneuvering, and learning maritime regulations and signaling.


Practice maritime navigation rules and buoyage systems with this app. It helps you identify knowledge gaps and track your progress in mastering essential regulations for mariners.