# Seabook Maritime vs Adel Mostafa Software

The clearest difference is update cadence: Adel Mostafa Software at every 2 weeks against Seabook Maritime's every 16 months. Adel Mostafa Software also leads on iOS requirement (11.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Seabook Maritime ships an update every 16 months, Adel Mostafa Software every 2 weeks. The most recent releases landed on August 21, 2026 and February 26, 2026 respectively.

## The numbers

| Metric | Seabook Maritime | Adel Mostafa Software |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (19 ratings)](https://appshunter.io/ios/app/seabook-maritime/id708215141/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 79.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 36 MB | 46 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ozgur GUNES](https://appshunter.io/developer/708215144) | [Olymp Soft FZE](https://appshunter.io/developer/1808683436) |

## 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


### Adel Mostafa Software

[App page](https://appshunter.io/ios/app/adel-mostafa-software/id6473788417)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Seabook Maritime free?

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

### Is Adel Mostafa Software free?

Adel Mostafa Software is free to download, with no in-app purchases.

### Do Seabook Maritime or Adel Mostafa Software have ads?

Neither Seabook Maritime nor Adel Mostafa Software shows ads.

### Which is updated more often, Seabook Maritime or Adel Mostafa Software?

Seabook Maritime ships an update every 16 months, and Adel Mostafa Software every 2 weeks. Most recently, Seabook Maritime was updated on August 21, 2026 and Adel Mostafa Software on February 26, 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.*