# Master vs Onboard Maritime

The clearest difference is price: Onboard Maritime at Free against Master's $1.99. Master's advantage is in-app purchases (none vs 2) and update cadence (fortnightly vs every 3 months). On ads, device support and iOS requirement there is nothing between them.

Onboard Maritime is free to download; Master costs $1.99 up front. Onboard Maritime sells 2 one-off in-app purchases. Master asks for nothing beyond the download.

Master ships an update fortnightly, Onboard Maritime every 3 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | Master | Onboard Maritime |
| --- | --- | --- |
| 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 | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | Paid | — |
| Size | 117 MB | 110 MB |
| Requires iOS | **15.0** | 15.2 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Peterjohn Chisholm](https://appshunter.io/developer/1602390398) | [Onboard Maritime Limited](https://appshunter.io/developer/1725092070) |

## 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


### Onboard Maritime

[App page](https://appshunter.io/ios/app/onboard-maritime/id6475762026)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OOW Group Sessions | Free | one-time |
| Deck Officer | Free | one-time |


## Frequently asked questions

### Is Master free?

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

### Is Onboard Maritime free?

Onboard Maritime is free to download, with in-app purchases available.

### Do Master or Onboard Maritime have ads?

Neither Master nor Onboard Maritime shows ads.

### Which is updated more often, Master or Onboard Maritime?

Master ships an update fortnightly, and Onboard Maritime every 3 months. Most recently, Master was updated on October 25, 2026 and Onboard Maritime on October 25, 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.*