# Maritime Master vs Sailor's Deck

The clearest difference is review sentiment: Sailor's Deck at 100% against Maritime Master's 0%. Maritime Master's advantage is in-app purchases (none vs 3) and device support (4 vs 2). On price, update cadence and ads there is nothing between them.

Both are free to download. Sailor's Deck sells 3 one-off in-app purchases. Maritime Master asks for nothing beyond the download.

Maritime Master ships an update every 10 days, Sailor's Deck every 3 weeks. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Maritime Master | Sailor's Deck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sailors-deck-colregs/id6761303264/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Monetization | **Free** | Paid |
| Size | 2.3 GB | 23 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MARITIME MASTER LIMITED](https://appshunter.io/developer/1107589346) | [Vladimir Arefev](https://appshunter.io/developer/1888773460) |

## What reviewers say

### Maritime Master

[App page](https://appshunter.io/ios/app/maritime-master/id6741146129)

Master maritime navigation and safety with an interactive 3D learning experience. Covers COLREGs, flags, ropework, navigation, meteorology, and more through engaging lessons and quizzes.

**Highlights:** Interactive 3D ropework and knot tying, COLREGs reference and quizzes, Flag and phonetic alphabet learning, Maritime safety procedures, Navigation tools and techniques, Meteorology and weather patterns, Comprehensive maritime exams

**Features:** Vision Pro support

**In-app purchases:** none


### Sailor's Deck

[App page](https://appshunter.io/ios/app/sailors-deck-colregs/id6761303264)

Master navigation lights and day shapes for skipper exams with this flashcard app. It uses spaced repetition to build lasting visual memory, tracks your progress, and resurfaces difficult configurations until they stick. Study offline with no ads or subscriptions.

**Highlights:** Spaced repetition learning, Four-layer progression of study, Confusion pair training, Offline functionality, Progress tracking and session summaries, Association-specific terminology, Daily streak motivator

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Buy a Coffee | $2.99 | one-time |
| Generous Tip | $3.99 | one-time |


## Frequently asked questions

### Is Maritime Master free?

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

### Is Sailor's Deck free?

Sailor's Deck is free to download, with in-app purchases available.

### Do Maritime Master or Sailor's Deck have ads?

Neither Maritime Master nor Sailor's Deck shows ads.

### Which is updated more often, Maritime Master or Sailor's Deck?

Maritime Master ships an update every 10 days, and Sailor's Deck every 3 weeks. Most recently, Maritime Master was updated on November 4, 2026 and Sailor's Deck on November 5, 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.*