Master-Nav Downloads & RevenueMaster-Nav · App Store
Master-Nav is #10 in Education Paid in Australia and charting in 4 of 30 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
24 Sep 2026Full timeline · 21 events
- 📈Master-Nav new best rank in the overall chart: #35Top Paid · All Apps · ZA
- 📈Master-Nav entered the top 100Top Paid · All Apps · ZA
- 🚀Master-Nav: now shown next to ColRegs: Nav Lights & Shapes, ColRegs: Rules of the Road, Sail Safe +5 morethe store's “similar apps” for it changed: who it's seen as competing with
- 📈Master-Nav charting in a new countrySouth Africa
- 📈Master-Nav entered the top 100Top Paid · All Apps · SE
- 📈Master-Nav charting in a new countrySweden
- 📈Master-Nav new best rank in the overall chart: #41Top Paid · All Apps · NL
- 📈Master-Nav entered the top 100Top Paid · All Apps · NL
- 📈Master-Nav charting in a new country in 2 chartsNetherlands · Philippines
- 📈Master-Nav entered the top 10Top Paid · Education · IT
- 📈Master-Nav entered the top 100Top Paid · Education · IN
- 📈Master-Nav new best rank in the overall chart: #102Top Paid · All Apps · CA
- 📈Master-Nav new best rank in the overall chart: #114Top Paid · All Apps · IT
- 📈Master-Nav entered the top 100Top Paid · Education · IT
- 📈Master-Nav charting in a new countryItaly
- 📈Master-Nav entered the top 100Top Paid · Education · US
- 📈Master-Nav charting in a new countryUnited States
- 🆕Master-Nav first spotted by AppInsider#6 in Top Paid · Education · Australia
- 📈Master-Nav new best rank in the overall chart: #123Top Paid · All Apps · GB
- 📦Master-Nav version 1.50New improved artwork and content, minor bug fixes.
- 🆕Master-Nav released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Education PaidMaster-Nav at a glance
AI summary written from our chart and store data, 2026-11-03. It can be wrong: check the numbers above.
Master-Nav is an interactive educational tool designed for maritime students and professionals to master the International Regulations for Preventing Collisions at Sea (COLREGS) through progressive learning and memory aids. The app currently holds a strong #3 position in the Australian Education Paid charts, with moderate presence in the UK (#84) and India (#153), indicating niche but high-value traction in specific markets.
Similar apps: Marine Traffic, Navionics Boating, Anki
Master-Nav on the App Store
App details
App privacy Measured
Master-Nav declares it collects no data at all — the rarest and most private label on the App Store.
As declared by the developer on the App Store — Apple requires every app to publish this label. We track changes over time.
Master-Nav downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Where Master-Nav's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Retention · share of new users still active
Time spent · per daily user
How this is calculated
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Australia | EducationPaid | #10 |
 United Kingdom | All AppsPaid | #170 |
| United Kingdom | EducationPaid | #83 |
 South Africa | All AppsPaid | #35 |
 India | EducationPaid | #158 |
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Ratings
App Store, worldwide.
Review momentum
ⓘ How we measure thisReview momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about Master-Nav
From recent reviews.
About Master-Nav
Instead of guessing through random question banks, Master-Nav guides you step by step through every rule from start to finish. Wrong answers are revisited until the rules stick — properly.
Complex regulations are broken down into learnable chunks — bite-sized sections supported by mnemonics, memory aids and interactive visuals designed around how the brain actually retains information.
Every incorrect answer is shown graphically alongside the correct one — immediately clear, no confusion. And with a single tap, the relevant COLREGS rule is accessible from any question at any time.
Master-Nav covers COLREGS Parts A to D — General, Steering & Sailing, Lights & Shapes and Sound & Light Signals — plus Annex IV Distress Signals. Over 1000 questions in multiple formats, with a dedicated Practice Section that tracks right, wrong and unanswered so you always know where to focus.
COLREGS — the easy way.
Latest updates
More from Peterjohn Chisholm
Similar apps
Apps people compare with Master-Nav: the same core purpose or gameplay, checked one by one.
Maritime Master - COLREGsMARITIME MASTER LIMITED
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AMC Collision RegulationsAMC Search Ltd
Sail SafePrachi Pimpalkhare
ColRegs: Rules of the RoadThe Other Hat
ColRegs: Nav Lights & ShapesThe Other Hat