# Rák vs Master

The clearest difference is price: Rák at Free against Master's $1.99. Rák also leads on iOS requirement (8.0 vs 15.0). Master's advantage is update cadence (fortnightly vs every 2 months). On ads, in-app purchases and device support there is nothing between them.

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

Rák ships an update every 2 months, Master fortnightly. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Rák | Master |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | — | **[4.8 (100 ratings)](https://appshunter.io/ios/app/master-nav/id1602390396/reviews)** |
| Number of ratings | — | **100** |
| Positive reviews | — | 96.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | — | Paid |
| Size | 33 MB | 117 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bogi Magnussen](https://appshunter.io/developer/1118772643) | [Peterjohn Chisholm](https://appshunter.io/developer/1602390398) |

## What reviewers say

### Rák

[App page](https://appshunter.io/ios/app/rak/id1118772644)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Rák free?

Rák is free to download, with no in-app purchases.

### Is Master free?

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

### Do Rák or Master have ads?

Neither Rák nor Master shows ads.

### Which is updated more often, Rák or Master?

Rák ships an update every 2 months, and Master fortnightly. Most recently, Rák was updated on October 26, 2026 and Master on October 30, 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.*