Comparison

OpenSeaMap vs Marine Contract Tracker

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Free worldwide sea chart
  • Chartplotting with tracking
  • Waypoint creation and export
  • Offline map caching
  • Mark and search locations
  • Adjustable chart zoom
Features
Read full description

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.

About

Marine Contract Tracker

Features
Read full description

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

OpenSeaMap4 screens
Marine Contract Tracker4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

Scorecard3 real differences · 7 level
OpenSeaMap versus Marine Contract Tracker: the parameters behind the verdict, then further details
ParameterOpenSeaMapMarine Contract Tracker
PriceFree — better$1.99
Rating1.0 (1 ratings) — better—
Positive reviews38.3% of reviews—
Number of ratings1 — better—
Update frequencyEvery 2 months—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.614.0 — better
Further details — not scored
Size13 MB24 MB
Age rating4+4+
Developerappdoctors UGStanislav Soroka

In-app purchases

1 purchases

OpenSeaMap

One-time1
  • OpenSeaMap Professional$1.99
None

Marine Contract Tracker

No in-app purchases

Questions

Is OpenSeaMap free?
OpenSeaMap is free to download, with in-app purchases available.
Is Marine Contract Tracker free?
Marine Contract Tracker costs $1.99, with no in-app purchases.
Do OpenSeaMap or Marine Contract Tracker have ads?
Neither OpenSeaMap nor Marine Contract Tracker shows ads.

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