# Seabook Maritime vs Nautical Ship Flags

Seabook Maritime and Nautical Ship Flags both sit at 4.5 stars, but that hides the real split: 79% of Seabook Maritime's written reviews are positive against 33% of Nautical Ship Flags's. Seabook Maritime also leads on in-app purchases (none vs 2) and iOS requirement (13.0 vs 15.2). Nautical Ship Flags's advantage is update cadence (every 3 weeks vs every 16 months). On price, rating, ratings volume 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. Seabook Maritime asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.5 for Seabook Maritime against 4.6 for Nautical Ship Flags. Both are backed by a comparable volume of ratings — 19 and 15 respectively. Written reviews are what separate them: 79% of Seabook Maritime's written reviews are positive against 33% of Nautical Ship Flags's.

Seabook Maritime ships an update every 16 months, Nautical Ship Flags every 3 weeks. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Seabook Maritime | Nautical Ship Flags |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (19 ratings)](https://appshunter.io/ios/app/seabook-maritime/id708215141/reviews) | **[4.6 (15 ratings)](https://appshunter.io/ios/app/nautical-ship-flags/id6737554146/reviews)** |
| Number of ratings | **19** | 15 |
| Positive reviews | **79.1% of reviews** | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 36 MB | 7 MB |
| Requires iOS | **13.0** | 15.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ozgur GUNES](https://appshunter.io/developer/708215144) | [Stanislav Cekunov](https://appshunter.io/developer/1085076843) |

## What reviewers say

### Seabook Maritime

[App page](https://appshunter.io/ios/app/seabook-maritime/id708215141)

This app provides essential maritime information for seafarers and shore-based professionals. It serves as an offline reference for ship stability, navigation, regulations, and marine engineering, aiding in safer seas and cleaner waters.

**Highlights:** COLREG regulations, GMDSS information, Marine engineering details, Navigation at sea, Ship stability calculations, Shipboard safety guidelines

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Seabook Maritime free?

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

### Is Nautical Ship Flags free?

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

### Which has better reviews, Seabook Maritime or Nautical Ship Flags?

Nautical Ship Flags is rated higher. Seabook Maritime averages 4.5 out of 5 from 19 ratings, while Nautical Ship Flags averages 4.6 from 15 ratings.

### Do Seabook Maritime or Nautical Ship Flags have ads?

Neither Seabook Maritime nor Nautical Ship Flags shows ads.

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

Seabook Maritime ships an update every 16 months, and Nautical Ship Flags every 3 weeks. Most recently, Seabook Maritime was updated on November 1, 2026 and Nautical Ship Flags on November 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*