OpenSeaMap vs Marine Contract Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OpenSeaMap
This app provides a free, worldwide nautical chart with detailed sea information, including lights, weather data, and harbor details. It offers chartplotting, waypoint management, and offline map caching for navigation. Users can mark locations, enter coordinates, and adjust chart zoom for optimal viewing.
- Free worldwide sea chart
- Chartplotting with tracking
- Waypoint creation and export
- Offline map caching
- Mark and search locations
- Adjustable chart zoom
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OpenSeaMap is a worldwide Opensource-project for creating a free nautical chart. Founded in 2009 the project gained a lot of attention lately adding more and more nautical information for free. Not even lights and other nautical infos are provided, but also more and more info layers like weather data, information about harbours and so on. As an add on to the OpenStreetMap this provides all missing info for nautical activities. OpenSeaMap is part of OpenStreetMap and uses the same database. FEATURES: - Free worldwide sea chart (incl. HD chart graphics) - Search for geolocations worldwide - Chartplotting with continuous tracking - Waypoints can easily be created, edited, deleted & exported - Mark locations in the chart - Zoom chart optically to fit your preferred reading size - Enter coordinates directly to be displayed in the chart - Offline caching of up to 1 million map tiles - Cleanup of chart cache data at any time To ensure future development and support of the OpenSeaMap app we encourage you to buy the In-App-Product "PRO". This will help keeping new updates and features coming. DISCLAIMER: OpenSeaMap is part of the OpenStreetMap and uses the same database. As an experienced navigator you should NEVER rely your descisions on one source of information alone. Please keep in mind that the OpenSeaMap can not replace official sea charts on bord of your boat. Please use the OpenSeaMap app only in conjunction with official sea charts and conforming to national and international regulations. Please recognize that no depth information is provided by this product. IMPORTANT: The continued use of the GPS can significantly decrease the battery level.
Marine Contract Tracker
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Marine Contract Tracker is the ultimate tool for seafarers to stay in control of their contracts. Whether you're at sea or ashore, this app helps you visualize your progress with a clean, intuitive timeline showing how much time has passed — and how much is left — in each contract. Add unlimited contracts, keep personal notes for each one, and never miss an important date with customizable notifications before a contract ends. Key Features: - Graphical timeline showing elapsed and remaining contract time - Unlimited number of contracts - Add personal notes to each contract - Customizable end-of-contract alerts - Simple, clean interface made for seafarers Keep your contracts organized. Stay informed. Sail smarter.
Screenshots
Verdict
The clearest difference is price: OpenSeaMap at Free against Marine Contract Tracker's $1.99. Marine Contract Tracker's advantage is in-app purchases (none vs 1) and iOS requirement (14.0 vs 18.6). On ads 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
OpenSeaMap is free to download; Marine Contract Tracker costs $1.99 up front. OpenSeaMap sells 1 one-off in-app purchase. Marine Contract Tracker asks for nothing beyond the download.
| Parameter | OpenSeaMap | Marine Contract Tracker |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 38.3% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 18.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | appdoctors UG | Stanislav Soroka |
In-app purchases
OpenSeaMap
- OpenSeaMap Professional$1.99
Marine Contract Tracker
No in-app purchases
Questions
Is OpenSeaMap free?
Is Marine Contract Tracker free?
Do OpenSeaMap or Marine Contract Tracker have ads?
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