Who is Master-Nav for?

Master-Nav is a consumer product built for maritime students and professionals.

What platforms does Master-Nav run on?

Master-Nav runs on the web and iOS.

Is Master-Nav still maintained?

Unverified. Master-Nav has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What projects are similar to Master-Nav?

Similar projects tracked by PulseGate include Maritime Master - COLREGs, Maritime Master - Nav Lights, and Marine Nav Lights Trainer.

Who makes Master-Nav?

Master-Nav is developed by Peterjohn Chisholm, based in the United States.

When did Master-Nav launch?

Master-Nav first shipped in 2022.

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Master-Nav

Name: Master-Nav
Price: 1.99 USD
Author: Peterjohn Chisholm

App StoreEducation & learning🇺🇸

Master-Nav is an interactive learning app for mastering COLREGS maritime regulations. It breaks down complex rules into manageable sections, uses mnemonics and visuals, and provides over 1000 practice questions. Designed for mariners and students preparing for exams or needing to refresh their knowledge.

PaidWebiOS

Visit App Store

Overview

8 features

Master-Nav is an Education & learning project. It helps mariners and students efficiently learn and retain COLREGS maritime regulations through interactive, structured practice. Master-Nav is a consumer product aimed at maritime students and professionals. Master-Nav is paid, starting at $1.99. It runs on the web and iOS.

It is developed by Peterjohn Chisholm (United States), and it first shipped in 2022. Among its 8 catalogued features are interactive quizzes, step-by-step learning, and mnemonic aids.

Interactive quizzes
Step-by-step learning
Mnemonic aids
Visual explanations
Progress tracking
Practice section
Rule reference
Multiple question formats

Built with & integrations

Runs on

BrowseriOS

Trust & compliance

Verified signals

HTTPSStore-verified publisher

Indexing history

What PulseGate has recorded for this listing

Indexed17 Jun · 20:46 UTC
Listing verified against its public source
Source: PulseGate · Open

Frequently asked questions about Master-Nav

What does Master-Nav do?: Master-Nav helps mariners and students efficiently learn and retain COLREGS maritime regulations through interactive, structured practice. It is catalogued under Education & learning on PulseGate.
Who is Master-Nav for?: Master-Nav is a consumer product built for maritime students and professionals.
How much does Master-Nav cost?: Paid plans start at $1.99.
What platforms does Master-Nav run on?: Master-Nav runs on the web and iOS.
Is Master-Nav still maintained?: Unverified. Master-Nav has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What projects are similar to Master-Nav?: Similar projects tracked by PulseGate include Maritime Master - COLREGs, Maritime Master - Nav Lights, and Marine Nav Lights Trainer.Maritime Master - COLREGs Maritime Master - Nav Lights Marine Nav Lights Trainer
Who makes Master-Nav?: Master-Nav is developed by Peterjohn Chisholm, based in the United States.
When did Master-Nav launch?: Master-Nav first shipped in 2022.

At a glance

Platforms: Mobile
Languages: English
Built for: maritime students and professionals
Model: B2C
Solves: Helps mariners and students efficiently learn and retain COLREGS maritime regulations through interactive, structured practice.

Registered as

App Store: 1602390396
Google Play: com.pjccappdev.master_nav

Developer

🇺🇸Peterjohn Chisholm

Index record

Identity confidence: High · 87.6
Indexed: 17 Jun 2026
Lifecycle: Alive
Last seen: 17 Jun 2026

Identity audit (12)

Slug: master-nav-apple-com
Lifecycle last checked: 8 Aug 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 17 Jun 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Taken from the project's own store listing.
Languages from: Detected by a language model from page content.
Canonical URL: https://apps.apple.com/app/id1602390396

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