# Master vs Official MCA guidance

The clearest difference is price: Official MCA guidance at Free against Master's $1.99. Master's advantage is update cadence (fortnightly vs every 2 months). On review sentiment, ads, in-app purchases and device support there is nothing between them.

Official MCA guidance is free to download; Master costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Master ships an update fortnightly, Official MCA guidance every 2 months. The most recent releases landed on October 30, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Master | Official MCA guidance |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.8 (100 ratings)](https://appshunter.io/ios/app/master-nav/id1602390396/reviews)** | — |
| Number of ratings | **100** | — |
| Positive reviews | 96.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Paid | **Free** |
| Size | 117 MB | 47 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Peterjohn Chisholm](https://appshunter.io/developer/1602390398) | [TSO (The Stationery Office)](https://appshunter.io/developer/463289102) |

## What reviewers say

### Master

[App page](https://appshunter.io/ios/app/master-nav/id1602390396)

Learn maritime navigation rules with an interactive system designed for effective retention. This app breaks down complex regulations into manageable sections with visual aids and mnemonics. It revisits incorrect answers and provides instant graphical feedback, making the learning process intuitive and efficient.

**Highlights:** Interactive learning system, Step-by-step rule guidance, Mnemonics and memory aids, Interactive visuals, Graphical feedback on answers, Practice section with progress tracking

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Official MCA guidance

[App page](https://appshunter.io/ios/app/official-mca-guidance/id1617805332)

This app offers practical guidance for maritime professionals, focusing on safe practices and well-being at sea. It includes checklists for fishing vessel inspections and live updates for the latest regulations.

**Highlights:** Wellbeing at sea guidance, Behaving safely at sea, Fishing vessel checklists, Faceted search, Live updates

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Master free?

Master costs $1.99, with no in-app purchases.

### Is Official MCA guidance free?

Official MCA guidance is free to download, with no in-app purchases.

### Do Master or Official MCA guidance have ads?

Neither Master nor Official MCA guidance shows ads.

### Which is updated more often, Master or Official MCA guidance?

Master ships an update fortnightly, and Official MCA guidance every 2 months. Most recently, Master was updated on October 30, 2026 and Official MCA guidance on October 20, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*