Price and ratings
- Price
- £1.99
- Rating
- 4.9 out of 5
- Ratings
- 145United Kingdom
Versions
- Released
- 8 Jan 20224 years ago
- Last update
- 3 months agoVersion 1.50
- Requires
- iOS 15.0 or later
Details
- Size
- 122.7 MB
- Languages
- 1
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
Competitors
Full chartTop of Paid · Education in Australia. Master-Nav: Colregs is #15 there. Changes are over 7 days.
- #1 (number one)Change unknown
AnkiMobile FlashcardsAnki Software, LLC - #2Change unknown
SkyView®Terminal Eleven LLC - #3Change unknown
Know Your Rights QLDKnow Your Rights Pty Ltd - #4Change unknown
Te Aka Māori DictionaryTE MURUMARA FOUNDATION - #5Change unknown
Teach Your Monster to ReadTeach Your Monster - #6Change unknown
FSEPThe Royal Australian and New Zealand College of Obstetricians and Gynaecologists - #7Change unknown
LocoPast: The History MapuRoutine Ltd - #8Change unknown
TouchChat HD- AAC w/ WordPowerPrentke Romich Company - #9Change unknown
Hit the Button MathsTopmarks Online Ltd - #10Change unknown
FireAPT — Aptitude Test PrepCameron Stewart - #11Change unknown
Australian Oxford DictionaryEnfour, Inc. - #12Change unknown
Fast AAC: School & ClinicMartin Saetre - #13Change unknown
GENKI Vocab for 3rd Ed.The Japan Times Publishing, Ltd. - #14Change unknown
GENKI Conjugation CardsThe Japan Times Publishing, Ltd. - #16Change unknown
GENKI Kanji for 3rd Ed.The Japan Times Publishing, Ltd. - #17Change unknown
Proloquo2Go AACAssistiveWare - #18Change unknown
Flashnote DerbyLuke Bartolomeo - #19Change unknown
Fundamentals Of InstructingBravo Zulu Apps LLC - #20Change unknown
Stack the Countries®Freecloud Design, Inc. - #21Change unknown
LEGO® DUPLO® DOCTORStoryToys Limited
Store listing
How the app presents itself on the App Store. Select a screenshot to open it full size.
What's new
Version 1.50 · 15 Jun 2026 · 3 months ago
New improved artwork and content, minor bug fixes.
Current rankings
Every chart this app is in right now, best position first.
| Chart | Rank | 24 h | 7 days | Best | Days on chart |
|---|---|---|---|---|---|
| Australia· Paid · Education | #15 | Change unknown | Change unknown | #15 | 2 |
| France· Paid · Education | #17 | Change unknown | Change unknown | #17 | 2 |
| United Kingdom· Paid · Education | #42 | Change unknown | Change unknown | #32 | 2 |
| Canada· Paid · Education | #61 | Change unknown | Change unknown | #34 | 2 |
Rank history
Higher on the chart is better: #1 is at the top.
Sign in to see 30 days, 90 days and all history.
Australia · Paid · Education: best #15, latest #15, over 2 snapshots since 8 Oct. No snapshots from 8 Oct to 9 Oct; the line joins the snapshots on either side.
Ranking events
Entries, big moves, #1s and new versions we've recorded.
- Dropped #34 → #61 in Paid · EducationCanada
More from Peterjohn Chisholm
Their other apps that Appulse has seen in the charts, charting ones first.
| App | Best rank now | Released | App Store |
|---|---|---|---|
 Master-Nav: IALA MBSEducation | Paid · EducationCanada#63 | 8 months ago |