Seabook Maritime vs Nautical Ship Flags
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
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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 ...
Nautical Ship Flags
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.
- Interactive quizzes
- Flag details and reference
- Flashlight Morse signaling
- Progress tracking
- Offline functionality
- Analytics view
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A complete guide to maritime flags, including letters, numbers, substitutes, and Morse code, now with an enhanced Analytics View to track your progress and identify areas for improvement. Enjoy interactive quizzes and detailed flag information. This app also lets you view Morse code signals through your phone’s flashlight, making it perfect for boaters, sailors, and anyone fascinated by maritime navigation. Features: • Interactive Tests • Randomized Question Types • Flashlight Morse Signaling • Flag Details and Symbol Reference • Review and Progress Tracking • Analytics View for tracking your progress • Bright, minimalistic design • Full offline functionality Links for more info: - Terms of Use & Privacy policy: https://nauticalshipflags.com - Link for more info: https://support.apple.com/en-gb/HT202039
Screenshots
Verdict
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.
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. 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.
| Parameter | Seabook Maritime | Nautical Ship Flags |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (19 ratings) | 4.6 (15 ratings) — better |
| Positive reviews | 79.1% of reviews — better | 33.3% of reviews |
| Number of ratings | 19 — better | 15 |
| Update frequency | Every 16 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.2 |
| Further details — not scored | ||
| Size | 36 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Ozgur GUNES | Stanislav Cekunov |
Customer experience
Seabook Maritime
Nautical Ship Flags
In-app purchases
Seabook Maritime
No in-app purchases
Nautical Ship Flags
- Weekly$0.997 Days
- Lifetime$2.99
Questions
Is Seabook Maritime free?
Is Nautical Ship Flags free?
Which has better reviews, Seabook Maritime or Nautical Ship Flags?
Do Seabook Maritime or Nautical Ship Flags have ads?
Which is updated more often, Seabook Maritime or Nautical Ship Flags?
Other comparisons
