Seabook+ vs IALA Marks
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Seabook+
This app provides comprehensive maritime information for professionals and enthusiasts. It offers tools for navigational and technical computations, designed for easy use at sea with offline accessibility and a user-friendly interface.
- Comprehensive maritime information
- Navigational and technical computations
- Offline accessibility
- User-friendly interface
- Information for marine professionals
- Knowledge for sea enthusiasts
Read full descriptionHide full description
Seabook is an information and knowledge source for marine professionals, sailors as well as sea enthusiasts. Seabook Master contains comprehensive and detailed information on the profession. Seabook fits to use at sea with offline accessibility and best user interface. The tools help navigational and technical computations and conversations at ease.
IALA Marks
Read full descriptionHide full description
IALA Marks – Navigate Safely! Learn to recognize and interpret IALA maritime marks with an interactive and engaging app. IALA Marks helps you understand navigation rules with clear explanations, dynamic animations, and a realistic 3D environment where you can practice steering your boat during the day and at night. - Discover IALA marks – Understand their meaning and role in navigation. - Learn to navigate safely – Follow the signals and move correctly based on their indications. - Watch explanatory animations – See how marks change between day and night and how to react. - Test your skills in 3D – Steer a virtual boat in a realistic environment to apply what you've learned. Perfect for sailors, nautical students, and all navigation enthusiasts. Download the app now and improve your safety at sea!
Screenshots
Verdict
The clearest difference is update cadence: IALA Marks at every 6 months against Seabook+'s every 35 months. IALA Marks also leads on price ($5.99 vs $6.99). On ads, in-app purchases, device support and iOS requirement 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
Seabook+ costs $6.99 and IALA Marks $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Seabook+ ships an update every 35 months, IALA Marks every 6 months. The most recent releases landed on October 12, 2026 and October 9, 2026 respectively.
| Parameter | Seabook+ | IALA Marks |
|---|---|---|
| Price | $6.99 | $5.99 — better |
| Rating | 4.0 (3 ratings) — better | — |
| Positive reviews | 53.3% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 35 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 37 MB | 25 MB |
| Age rating | 12+ | 4+ |
| Developer | Ozgur GUNES | Sergio Guaita |
In-app purchases
Seabook+
No in-app purchases
IALA Marks
No in-app purchases
