# Master vs Kosmosas

The clearest difference is price: Kosmosas at Free against Master's $1.99. Kosmosas also leads on iOS requirement (11.0 vs 15.0). Master's advantage is chart position (#151 vs unranked). On ads, in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | Master | Kosmosas |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.7 (94 ratings)](https://appshunter.io/ios/app/master-nav/id1602390396/reviews)** | — |
| Number of ratings | **94** | — |
| Positive reviews | 96.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Monetization | Paid | — |
| Best chart rank | **#151** | — |
| Size | 117 MB | 245 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Peterjohn Chisholm](https://appshunter.io/developer/1602390398) | [Tadas Ziziunas](https://appshunter.io/developer/1345319593) |

## What reviewers say

### Master

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

**Currently charting:** #151 Top Paid · Education (US App Store)

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


### Kosmosas

[App page](https://appshunter.io/ios/app/kosmosas/id6448805235)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Master free?

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

### Is Kosmosas free?

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

### Do Master or Kosmosas have ads?

Neither Master nor Kosmosas shows ads.

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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.*