---
title: "Master-Nav: Colregs - Reviews, Revenue and Downloads in Pakistan | Apple App Store"
description: "Master-Nav makes learning COLREGS easy with its comprehensive learning system that leverages the natural learning mechanisms of the brain. Our goal is to simplify your preparation for maritime qualifi"
---

# Master-Nav: Colregs — Pakistan
> COLREGS - the easy way!

![Master-Nav App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/52/a3/99/52a3993b-728b-b64b-dd7d-c3c6a4161325/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/434x0w.png)

**Developer:** [Peterjohn Chisholm](https://apptail.io/developer/peterjohn-chisholm-xgab)
**Category:** Education
**Rating:** N/A (0 ratings)
**Price:** Free
**Bundle ID:** eu.pjcc.NavMaster
**Store:** Apple App Store
**Country:** Pakistan
**Version:** 1.46 (released 2026-04-01)
**Original Release:** 2022-01-08
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/pk/app/app/id1602390396)
**AppTail Page:** [https://apptail.io/app/master-nav-VYXc/pakistan](https://apptail.io/app/master-nav-VYXc/pakistan)

## Master-Nav Description
Master-Nav makes learning COLREGS easy with its comprehensive learning system that leverages the natural learning mechanisms of the brain. Our goal is to simplify your preparation for maritime qualifications and maximise your success. Instead of diving into dense rule books, our application uses interactive visuals, memory aids, and exam answer phrases for an engaging and intuitive learning experience.

Start with the Learning Section to understand the rules step by step, then move to the Practice Section to reinforce your knowledge and improve your performance. Master-Nav covers COLREGS Part A to Part D (Rules 1-37) and the distress signals found in Annex IV thoroughly. With over 1000 questions in various formats, each supported by clear graphic answers highlighting errors, Master-Nav reinforces your knowledge through repeated practice, making rule retention effortless.

Our app-wide Rule button simplifies navigating the COLREGS Rule book. A single click gives you quick access to the relevant COLREG rule for the question at hand, saving valuable study time.

To make complex rules with technical terminology more understandable, we provide explanations in simple language. We understand that maritime regulations can be dense, especially for newcomers to the field.

Whether you're a cadet starting your maritime career or an experienced mariner refreshing your understanding of the COLREGS, Master-Nav is the ideal learning tool. Experience the convenience, effectiveness, and painless rule memorisation our app provides.

## Master-Nav Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple126/v4/2c/b1/e8/2cb1e8d4-9c21-bb4b-e79e-eb4d9f0e2ad0/4ff5e8b9-a15f-49c9-8aa8-3da435d48b5f_1.10_-_6.5inch_-_02.png/1284x2778.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource116/v4/13/c5/51/13c55114-1663-47a8-3819-9eca6c503f73/9469a9e4-3d34-406c-adac-9378b3b17072_6.5inch_-_mnc.png/1284x2778.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource116/v4/03/23/81/03238111-2247-212c-83a3-47f0e0c10893/f9492dd0-db13-423c-91db-d3c4cd592beb_6.5inch_-__part_B.png/1284x2778.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple116/v4/ae/e6/8a/aee68ae1-3f23-6d4a-c6d3-94e6657ba98f/eb2bf6df-fe15-4e44-90ee-c3e7768865b3_Rules_Explained_6.5.png/1284x2778.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource116/v4/3e/42/69/3e4269db-8338-57d6-9031-ea5b34046fb7/ef5f9082-4d90-44c6-89b7-9b48468f75b3_6.5inch_-_08.png/1284x2778.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/39/fa/0d/39fa0d42-0df7-4a4f-e9bd-d4d3da8780c0/51963b03-1199-417f-af95-ee8447897872_6.5inch_-_practice.png/1284x2778.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/Purple126/v4/bf/a5/e9/bfa5e933-2f8e-a405-5b98-e4f0e2ce6dea/471d0259-3f08-468e-8418-a182cd8d17d5_1.10_-_6.5inch_-_5.png/1284x2778.png)
- [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/Purple116/v4/ec/3f/02/ec3f02a3-caba-4275-88f4-e10e6b0076e0/015a17a3-f282-4f07-b749-fa010c1c2550_Sounds_6.5.png/1284x2778.png)
- [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/Purple116/v4/7a/79/7a/7a797aba-a181-00c1-511e-e6ecbdb333c2/82a6bc27-bacd-4fb9-acc5-bcc96f624db9_1.10_-_6.5inch_-_7.png/1284x2778.png)
- [Screenshot 10](https://is1-ssl.mzstatic.com/image/thumb/Purple126/v4/de/e6/f1/dee6f100-4136-bd1b-a0e2-506b2b868128/a3b81d0e-3fc6-46ad-894b-eb62fdc30dce_1.10_-_6.5inch_-_04.png/1284x2778.png)




## Master-Nav Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Paid | Philippines | Education | #4 |
| Top Paid | Ireland | Education | #13 |
| Top Paid | Australia | Education | #13 |
| Top Paid | United Arab Emirates | Education | #13 |
| Top Paid | Saudi Arabia | Education | #14 |
| Top Paid | Czechia | Education | #17 |
| Top Paid | Romania | Education | #18 |
| Top Paid | Philippines | Overall | #22 |
| Top Paid | United Kingdom | Education | #60 |
| Top Paid | Canada | Education | #64 |
| Top Paid | South Africa | Education | #79 |
| Top Paid | Ireland | Overall | #88 |
| Top Paid | Saudi Arabia | Overall | #101 |
| Top Paid | Romania | Overall | #103 |
| Top Paid | United States | Education | #113 |
| Top Paid | Greece | Education | #122 |
| Top Paid | United Arab Emirates | Overall | #130 |
| Top Paid | India | Education | #140 |
| Top Paid | Nigeria | Education | #141 |
| Top Paid | Czechia | Overall | #148 |
| Top Paid | Australia | Overall | #157 |
| Top Paid | Singapore | Education | #178 |
| Top Paid | Ukraine | Education | #188 |
| Top Paid | Malaysia | Education | #230 |
| Top Paid | Belgium | Education | #330 |
| Top Paid | United Kingdom | Overall | #338 |
| Top Paid | Poland | Education | #339 |
| Top Paid | Finland | Education | #358 |
| Top Paid | New Zealand | Education | #383 |
| Top Paid | Hungary | Education | #386 |
| Top Paid | Egypt | Education | #414 |
| Top Paid | Spain | Education | #417 |
| Top Paid | Netherlands | Education | #426 |
| Top Paid | Italy | Education | #458 |
| Top Paid | Indonesia | Education | #461 |



## Master-Nav Available In
- [United Kingdom](https://apptail.io/app/master-nav-VYXc/united-kingdom)
- [United States](https://apptail.io/app/master-nav-VYXc/united-states)
- [Australia](https://apptail.io/app/master-nav-VYXc/australia)
- [Canada](https://apptail.io/app/master-nav-VYXc/canada)
- [South Africa](https://apptail.io/app/master-nav-VYXc/south-africa)
- [France](https://apptail.io/app/master-nav-VYXc/france)
- [Philippines](https://apptail.io/app/master-nav-VYXc/philippines)
- [India](https://apptail.io/app/master-nav-VYXc/india)
- [Germany](https://apptail.io/app/master-nav-VYXc/germany)
- [Italy](https://apptail.io/app/master-nav-VYXc/italy)
- [Sweden](https://apptail.io/app/master-nav-VYXc/sweden)
- [Spain](https://apptail.io/app/master-nav-VYXc/spain)
- [Malaysia](https://apptail.io/app/master-nav-VYXc/malaysia)
- [Netherlands](https://apptail.io/app/master-nav-VYXc/netherlands)
- [United Arab Emirates](https://apptail.io/app/master-nav-VYXc/united-arab-emirates)
- [New Zealand](https://apptail.io/app/master-nav-VYXc/new-zealand)
- [Hungary](https://apptail.io/app/master-nav-VYXc/hungary)
- [Finland](https://apptail.io/app/master-nav-VYXc/finland)
- [Greece](https://apptail.io/app/master-nav-VYXc/greece)
- [Czechia](https://apptail.io/app/master-nav-VYXc/czechia)
- [Thailand](https://apptail.io/app/master-nav-VYXc/thailand)
- [Türkiye](https://apptail.io/app/master-nav-VYXc/turkey)
- [Ukraine](https://apptail.io/app/master-nav-VYXc/ukraine)
- [Austria](https://apptail.io/app/master-nav-VYXc/austria)
- [Argentina](https://apptail.io/app/master-nav-VYXc/argentina)
- [Singapore](https://apptail.io/app/master-nav-VYXc/singapore)
- [Egypt](https://apptail.io/app/master-nav-VYXc/egypt)
- [Norway](https://apptail.io/app/master-nav-VYXc/norway)
- [Switzerland](https://apptail.io/app/master-nav-VYXc/switzerland)
- [Mexico](https://apptail.io/app/master-nav-VYXc/mexico)
- [Brazil](https://apptail.io/app/master-nav-VYXc/brazil)
- [Taiwan](https://apptail.io/app/master-nav-VYXc/taiwan)
- [Kenya](https://apptail.io/app/master-nav-VYXc/kenya)
- [Malta](https://apptail.io/app/master-nav-VYXc/malta)
- [Vietnam](https://apptail.io/app/master-nav-VYXc/vietnam)
- [Poland](https://apptail.io/app/master-nav-VYXc/poland)
- [Belgium](https://apptail.io/app/master-nav-VYXc/belgium)
- [Bulgaria](https://apptail.io/app/master-nav-VYXc/bulgaria)
- [Russia](https://apptail.io/app/master-nav-VYXc/russia)
- [Ireland](https://apptail.io/app/master-nav-VYXc/ireland)
- [North Macedonia](https://apptail.io/app/master-nav-VYXc/north-macedonia)
- [Azerbaijan](https://apptail.io/app/master-nav-VYXc/azerbaijan)
- [Brunei](https://apptail.io/app/master-nav-VYXc/brunei)
- [Belarus](https://apptail.io/app/master-nav-VYXc/belarus)
- [Chile](https://apptail.io/app/master-nav-VYXc/chile)
- [China](https://apptail.io/app/master-nav-VYXc/china)
- [Colombia](https://apptail.io/app/master-nav-VYXc/colombia)
- [Denmark](https://apptail.io/app/master-nav-VYXc/denmark)
- [Dominican Republic](https://apptail.io/app/master-nav-VYXc/dominican-republic)
- [Algeria](https://apptail.io/app/master-nav-VYXc/algeria)
- [Ecuador](https://apptail.io/app/master-nav-VYXc/ecuador)
- [Estonia](https://apptail.io/app/master-nav-VYXc/estonia)
- [Hong Kong SAR China](https://apptail.io/app/master-nav-VYXc/hong-kong)
- [Croatia](https://apptail.io/app/master-nav-VYXc/croatia)
- [Indonesia](https://apptail.io/app/master-nav-VYXc/indonesia)
- [Israel](https://apptail.io/app/master-nav-VYXc/israel)
- [Iceland](https://apptail.io/app/master-nav-VYXc/iceland)
- [Japan](https://apptail.io/app/master-nav-VYXc/japan)
- [South Korea](https://apptail.io/app/master-nav-VYXc/south-korea)
- [Kuwait](https://apptail.io/app/master-nav-VYXc/kuwait)
- [Kazakhstan](https://apptail.io/app/master-nav-VYXc/kazakhstan)
- [Lebanon](https://apptail.io/app/master-nav-VYXc/lebanon)
- [Sri Lanka](https://apptail.io/app/master-nav-VYXc/sri-lanka)
- [Lithuania](https://apptail.io/app/master-nav-VYXc/lithuania)
- [Luxembourg](https://apptail.io/app/master-nav-VYXc/luxembourg)
- [Latvia](https://apptail.io/app/master-nav-VYXc/latvia)
- [Nigeria](https://apptail.io/app/master-nav-VYXc/nigeria)
- [Nepal](https://apptail.io/app/master-nav-VYXc/nepal)
- [Peru](https://apptail.io/app/master-nav-VYXc/peru)
- [Pakistan](https://apptail.io/app/master-nav-VYXc/pakistan)
- [Portugal](https://apptail.io/app/master-nav-VYXc/portugal)
- [Romania](https://apptail.io/app/master-nav-VYXc/romania)
- [Saudi Arabia](https://apptail.io/app/master-nav-VYXc/saudi-arabia)
- [Slovenia](https://apptail.io/app/master-nav-VYXc/slovenia)
- [Slovakia](https://apptail.io/app/master-nav-VYXc/slovakia)
- [Tunisia](https://apptail.io/app/master-nav-VYXc/tunisia)

---

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