Pursi - merikartat ja -tiedot

Content rating
Everyone
500+
Downloads
Content rating
Everyone
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About this app

Pursi is a free Finnish marine charting app. The app also includes real-time weather, temperature, algae conditions and large vessel traffic via AIS data. The app is open source.

The app is based on excellent open data published by Finnish authorities and the global OpenSeaMap project.

Two key concerns for boaters are the weather and the blue-green algae situation. You can view both directly on the map, without leaving your navigation. You can also report your own blue-green algae observations directly from the app! The sea water situation, wave and sea water height are also included - all viewable from the same app.

Pursi is open source. The app
Updated on
Jul 20, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
App activity and App info and performance
Data is encrypted in transit

What’s new

Bugikorjauksia.
Content rating
Everyone
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App support

About the developer
Clarid Oy
lari.lohikoski@iki.fi
Laajasalonkaari 6C 00840 HELSINKI Finland
+358 40 7545844