Master-Nav
Peterjohn Chisholm · Education
Independent analytics for this App Store listing. AppTracker is not affiliated with Peterjohn Chisholm.
Chart standing · US
What changed · US
Listing changes AppTracker has observed for this app in this storefront — new versions, price moves, rating shifts, and store copy.
Price & rating history · US
Reconstructed from the listing changes AppTracker has observed in this storefront. A field is charted once it has changed more than once, and each line starts at the value it moved from.
Average rating · ★ 4.75 now · 2 changes on record
Ratings breakdown · US
The star breakdown behind this app's rating in this storefront.
In-app purchases · US
No in-app purchases.
Screenshots
Keywords this app targets
Search terms AppTracker associates with this app — estimates, not search volume. ❝ = in the app's title; a highlighted number is its current position for that term.
Similar apps
Competitors and close alternatives, as estimated by AppTracker.
Maritime Master - COLREGs
MARITIME MASTER LIMITED
1 shared topic · 1 shared title word
Maritime Master - Nav Lights
MARITIME MASTER LIMITED
3 shared title words
Rule Master
Universal Queue LLC
1 shared topic · 1 shared title word
NavRules
Mintaka Innovations
1 shared topic
Maritime Master - OOW
MARITIME MASTER LIMITED
1 shared topic · 1 shared title word
ColRegs: Nav Lights & Shapes
The Other Hat
2 shared topics · 1 shared title word
COLREG 72: safety at sea
Smirnov Yury
Maritime Master – IALA Buoyage
MARITIME MASTER LIMITED
1 shared topic · 1 shared title word
About
Master-Nav is a progressive COLREGS learning system developed by a Master Mariner. The COLREGS are notoriously difficult to learn and retain — Master-Nav makes it significantly easier through an interactive system built around how your brain actually works. 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.
What's new · 1.50
New improved artwork and content, minor bug fixes.
Details