Seabook Maritime vs Adel Mostafa Software
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Seabook Maritime
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.
- COLREG regulations
- GMDSS information
- Marine engineering details
- Navigation at sea
- Ship stability calculations
- Shipboard safety guidelines
Read full descriptionHide full description
Seabook serves as a key information source for seafarers and shore-based employees to promote safer seas and cleaner waters. This easy-to-use, accessible-offline mobile app serves as a reference tool for key elements of Ship stability, Navigation, COLREG and Marine engineering, and is designed for seafarers, cadets, maritime students and master mariners alike. Seabook contains details on; 1) COLREG (International Regulations for Preventing Collisions at Sea) 2) GMDSS (Global Maritime Distress and Safety System) 3) International Code of Signals 4) Marine Engineering 5) Marine Meteorology 6) Shipboard Safety 7) Health at Sea 8) Life Saving Appliances 9) Shipmanagement and Business 10) Navigation at Sea 11) Ship Stability 12) Country Flags 13) Ropework 14) Knots 15) more and more enriched contents ...
Adel Mostafa Software
Read full descriptionHide full description
Adel Mostafa app is a must have application for my sons and fellow naval officers and any other person interested in celestial navigation as a science to benefit from to help them to calculate the time of occurrence of any natural phenomenon for a sailing ship Therefore, the navigator resorts to applying the method of successive approximation. It features Rhumb Line (Lat. & Long.), Rhumb Line (T.Co. & Dist.), Compass Error (Time Method), Compass Error (Amplitude Method), Star Chart, Meridian Passage, Sun Sight, Sun Run Sun, Star Sight, Universal Method, Egyptian Method, Unknown Star Identification, Equation of Time; Coordinates of the Sun & Aries, Prayer Time. The results are within 10-15 seconds which is accurate enough for sea.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Seabook Maritime | Adel Mostafa Software |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (19 ratings) — better | — |
| Positive reviews | 79.1% of reviews | — |
| Number of ratings | 19 — better | — |
| Update frequency | Every 16 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 36 MB | 46 MB |
| Age rating | 4+ | 4+ |
| Developer | Ozgur GUNES | Olymp Soft FZE |
In-app purchases
Seabook Maritime
No in-app purchases
Adel Mostafa Software
No in-app purchases







