Nautic Check vs SeeOnSea
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Nautic Check
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Make sure you have taken all the previsions and that you have on board everything you need for an enjoyable and safe sailing. Nautic Check offers information, practical advice and safety recommendations about everything you need when you go sailing or in motor boats. Statistically, 60-70% of maritime emergencies occur in recreational boats. Statistics also point to human error as one of the major causes of problems, followed by mechanical failures. Ignorance, lack of adequate and mandatory material or its misuse could aggravate any risk situation. That's why with Nautic Check we help you to ensure that everything is prepared for a safe navigation. It is not a simple and tedious checklist: In just seconds you can setup the features of your boat, the duration of the trip and the equipment on board. From there, you will only be asked with the appropriate questions, unlike other rigid lists that do not have the flexibility offered by Nautic Check. This friendly App gives you valuable information for your safety, asks you questions about the condition of the boat, the engine, the safety equipment, the navigation plan, the communication devices, the provisions, etc., in order to ensure that everything is right before sailing.
SeeOnSea
Record and share observations of the marine world, including fauna, flora, and natural events. Enhance discoveries with a mini-wiki and explore various map layers. Offers offline mode and multi-language support for global usability.
- Public/private observation sharing
- 5 observation types (Fauna, Flora, etc.)
- Mini-wiki with additional info
- Intuitive search with seasonality
- Offline mode
- Multi-language support
- Multiple map layers
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Creation of public or private observations with possibility of adjustment for 24h in order to record the direction. Observations can be confirmed by anyone. Sharing private observations is reserved for a group or community for which they were made. SeeOnSea is worldwide usable, on all seas and oceans, and even on rivers and lakes. 5 types of observations are possible (that will be soon completed): - Fauna - Flora - Natural events - Human print (pollution, nets, containers, etc.) - Notable sites Our mini-wiki presents for each observation additional information with text and photos captured from Wikipedia or from one of our scientific partners. The search is intuitive with seasonality/dates and the possibility to select several types of observations. In addition to the basic functions, the concept includes: - An offline mode - A true multi language - An internal messaging - Multiple layers of presentation (relief, bathymetry, traffic, wrecks, protected areas, etc.) and many options to discover. A User Guide is directly accessible at the first login or in the menu. It is not mandatory to create an account to access the observation sharing map. Without account, access is done as "guest" ("Unknown" account) with some limited features but it is anyway possible to create and confirm observations. Many functions are being developed and will soon complete the current version. The goal is to show the wealth of our world by reaching out to as many people as possible to respect and protect it. Come and join us!
Screenshots
Verdict
The clearest difference is update cadence: Nautic Check at every 6 days against SeeOnSea's every 3 weeks. Nautic Check also leads on iOS requirement (7.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Nautic Check ships an update every 6 days, SeeOnSea every 3 weeks. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.
| Parameter | Nautic Check | SeeOnSea |
|---|---|---|
| Price | Free | Free |
| Positive reviews | β | 75.0% of reviews |
| Update frequency | Every 6 days β better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | β | Free |
| Devices | iPhone, iPad, iPod β better | iPhone, iPod |
| Requires iOS | 7.0 β better | 15.6 |
| Further details β not scored | ||
| Size | 84 MB | 190 MB |
| Age rating | 4+ | 4+ |
| Developer | Advenio Software | SEEONSEA |
In-app purchases
Nautic Check
No in-app purchases
SeeOnSea
No in-app purchases







