About this app
Study and reference USCG Navigation Rules without relying on a connection. NavRules Pro brings Rules of the Road text, Inland and International comparisons, visual training, sound signals, scenarios, exam drills, and local study tools into one offline-first app. BUILT FOR SERIOUS STUDY - Browse Rules 1–38 and supporting reference material - Compare Inland and International wording and exam traps - Search rules, lights, shapes, and sound signals offline - Practice vessel lights, day shapes, sound signals, and encounter scenarios - Use focused drills, timed practice, verbatim questions, and mastery tracking - Save bookmarks, notes, highlights, mistakes, and study sets locally - Create encrypted backups and user-controlled study exports PRIVATE BY DESIGN No account. No ads. No third-party analytics or tracking SDKs. No cloud AI. Core content and study data stay on your device. FULL UNLOCK Official rule reading and a useful daily practice allowance are available without purchase. An optional one-time Full Unlock opens the complete training, study, and export toolkit. There is no subscription. IMPORTANT NavRules Pro is an independent educational and reference app. It is not affiliated with, endorsed by, or sponsored by the U.S. Coast Guard. It does not provide real-time navigation, GPS, AIS, collision avoidance, legal advice, or operational instructions. Always verify current official sources and the real-world situation before acting.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 20, 2026 · 9:19 AM Free
Screenshots
