# Nautical Ship Flags vs Master

The clearest difference is review sentiment: Master at 100% against Nautical Ship Flags's 33%. Master also leads on in-app purchases (none vs 2) and rating (5.0 vs 4.6). Nautical Ship Flags's advantage is ratings volume (15 vs 1) and device support (3 vs 1). On price, update cadence and ads there is nothing between them.

Both are free to download. Nautical Ship Flags sells 2 in-app purchases, starting at $0.99 per 7 days. Master asks for nothing beyond the download.

Master holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Nautical Ship Flags has 15 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 33% of Nautical Ship Flags's written reviews are positive against 100% of Master's.

Nautical Ship Flags ships an update every 3 weeks, Master fortnightly. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Nautical Ship Flags | Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (15 ratings)](https://appshunter.io/ios/app/nautical-ship-flags/id6737554146/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/master-nav-colregs-iala-tests/id6758554000/reviews)** |
| Number of ratings | **15** | 1 |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 7 MB | 305 MB |
| Requires iOS | **15.2** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Stanislav Cekunov](https://appshunter.io/developer/1085076843) | [Peterjohn Chisholm](https://appshunter.io/developer/1602390398) |

## What reviewers say

### Nautical Ship Flags

[App page](https://appshunter.io/ios/app/nautical-ship-flags/id6737554146)

Explore maritime signal codes and Morse code with interactive quizzes and detailed flag information. Track your learning progress with an analytics view and practice signaling using your phone's flashlight. This app offers full offline functionality for continuous learning.

**Highlights:** Interactive quizzes, Flag details and reference, Flashlight Morse signaling, Progress tracking, Offline functionality, Analytics view

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $0.99 | per 7 days |
| Lifetime | $2.99 | one-time |


### Master

[App page](https://appshunter.io/ios/app/master-nav-colregs-iala-tests/id6758554000)

Practice maritime navigation rules and buoyage systems with this app. It helps you identify knowledge gaps and track your progress in mastering essential regulations for mariners.

**Highlights:** USCG Navigation Rules practice, IALA Maritime Buoyage System tests, Knowledge gap identification, Progress tracking, Developed by Master Mariner

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

**In-app purchases:** none


## Frequently asked questions

### Is Nautical Ship Flags free?

Nautical Ship Flags is free to download, with in-app purchases available.

### Is Master free?

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

### Which has better reviews, Nautical Ship Flags or Master?

Master is rated higher. Nautical Ship Flags averages 4.6 out of 5 from 15 ratings, while Master averages 5.0 from 1 ratings.

### Do Nautical Ship Flags or Master have ads?

Neither Nautical Ship Flags nor Master shows ads.

### Which is updated more often, Nautical Ship Flags or Master?

Nautical Ship Flags ships an update every 3 weeks, and Master fortnightly. Most recently, Nautical Ship Flags was updated on November 4, 2026 and Master on October 31, 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.*