# Master-Nav: Colregs

> COLREGS: Learn it. Remember it. Pass it. Master Navigation Rules - the easy way!

Canonical page: [https://chrome-stats.com/d/com.pjccappdev.master\_nav](https://chrome-stats.com/d/com.pjccappdev.master_nav)

## Overview

- **ID:** `com.pjccappdev.master_nav`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** NAB DEV
- **Category:** EDUCATION
- **Downloads:** 33,823
- **Rating:** 4.52 / 5 (338 ratings)
- **Version:** M\_N5.8
- **Last updated:** 2026-09-06
- **First published:** 2023-05-26
- **Publisher country:** GB
- **Size:** 55 MB
- **Data as of:** 2026-09-26
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.pjccappdev.master_nav)
- **Website:** [https://master-nav.website/](https://master-nav.website/)
- **Privacy policy:** [https://www.freeprivacypolicy.com/live/ce6f5488-c713-48e5-b14b-27deddec6560](https://www.freeprivacypolicy.com/live/ce6f5488-c713-48e5-b14b-27deddec6560)

## Description

**Master-Nav: COLREGS** is a progressive learning app designed by a Master Mariner to make maritime navigation rules easier to understand, remember, and pass. Instead of relying on random question banks, it guides learners through every rule step by step, revisiting incorrect answers until the knowledge sticks.

The app covers COLREGS Parts A–D—General, Steering and Sailing, Lights and Shapes, and Sound and Light Signals—plus Annex IV Distress Signals. Bite-sized lessons, mnemonics, memory aids, interactive visuals, instant graphical explanations, and one-tap rule references support effective learning. With more than 1,000 questions and a practice section tracking correct, incorrect, and unanswered responses, Master-Nav helps maritime students and professionals focus their preparation.

## Rankings

- #353,844 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.gms.permission.AD_ID`
- `com.pjccappdev.master_nav.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Review summary

Master-Nav: Colregs is widely praised for its effective teaching methods, including illustrations, mnemonics, and interactive quizzes that make learning maritime navigation rules easier and more enjoyable. The app is a valuable resource for both students and professional mariners preparing for exams. Some users reported problems with premium purchase processing and occasional display issues in questions. Overall, it offers a comprehensive and user-friendly way to learn COLREGs, with free access featuring some ads that users find acceptable or wish to remove.

### Pros

- Effective tool for learning and memorizing COLREGs with clear explanations and illustrations
- Interactive quizzes and questions help reinforce learning and exam preparation
- Useful for both professional mariners and students studying maritime rules
- User-friendly and easy to navigate
- Free version offers substantial content with manageable ads

### Cons

- Premium upgrade issues with payment processing not working properly
- Some questions have display problems, such as not showing fully
- Ads present in free version which some users wish to remove

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.pjccappdev.master_nav)