Master-Nav
Store data observed · From public App Store data · How we score apps
- Education
- App Store
- United States
- 4.798 ratings
- Paid $1.99
- Updated
- Observed
Ratings
Observed984.7★ average
Chart position
Observed—Not on the top charts
90-day growth
—not enough history yet
Opportunity score
AI-derived10/100Weak · low confidence
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About Master-NavObserved
Master-Nav is an Education app by Peterjohn Chisholm on the United States App Store. Released Jan 8, 2022; last updated Jun 15, 2026 (version 1.50). Master-Nav costs $1.99 to download.
As of Oct 9, 2026, Master-Nav has a 4.7-star average rating from 98 ratings on the United States App Store. MRRBeam rates the success of Master-Nav 31/100 (early stage).
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.
- Success score
- 31/100 Early stage
- In Education
- Outside the top 100
- Chart position
- Not on the top charts
- Developer
- Peterjohn Chisholm
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Top Education apps
The most successful Education apps MRRBeam tracks in the United States.
Master-Nav: common questions
- What is Master-Nav?
- Master-Nav is an Education app developed by Peterjohn Chisholm, available on the App Store. It was first released on Jan 8, 2022.
- How is Master-Nav rated?
- Master-Nav has a 4.7-star average rating from 98 ratings on the United States App Store as of Oct 9, 2026.
- How much does Master-Nav cost?
- Master-Nav costs $1.99 to download.
- Is Master-Nav successful?
- MRRBeam rates the success of Master-Nav 31/100 (early stage). The success score combines rating volume, chart position and average rating.
- When was Master-Nav last updated?
- Master-Nav was last updated on Jun 15, 2026 (version 1.50).
- What are alternatives to Master-Nav?
- Similar Education apps tracked by MRRBeam include Duolingo: Language Lessons, Gauth: AI Study Companion, Learna: Speak & Learn English, Canvas by Instructure and ClassDojo.
- Is there room to build a competitor to Master-Nav?
- MRRBeam's opportunity score for Master-Nav is 10/100. Limited opening: an older app, little observable demand and a strong 4.7★ rating.