Free
About
Track your speed and technique for various water sports using GPS. This open-source app works offline and offers detailed performance metrics for wingfoiling, kitesurfing, and more. Analyze your sessions with advanced visualizations and export your data.
✓GPS speed and technique tracking
✓Offline functionality
✓Standalone Apple Watch app
✓Detailed speed metrics
✓Advanced session visualizations
✓Data import and export
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What's New in OpenWater
1.9
November 1, 2026
Apple Watch motion and fitness tracking fixes.
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FAQ
What water sports can I track with OpenWater?
OpenWater is designed for wingfoiling, parawinging, downwinding, windsurfing, kitesurfing, and sailing. It provides specific metrics tailored to each of these activities.
Does OpenWater require an internet connection to work?
No, OpenWater is an open-source app that works entirely offline. You do not need an internet connection or even an account to use its core features.
Can I use OpenWater on my Apple Watch without my phone?
Yes, the Apple Watch app for OpenWater runs standalone. It does not require your phone to be nearby or even installed, allowing you to record sessions directly from your watch.
How does OpenWater measure speed accurately?
OpenWater uses the receiver's Doppler measurement for speed, not just differencing positions. This provides more accurate readings, especially for categories like 2-second peaks and custom distances.
What kind of data can I import and export with OpenWater?
You can import GPX, TCX, FIT, and CSV files from devices like Garmin, Coros, and Suunto. You can also export your data in GPX, TCX, CSV, GeoJSON, or a complete lossless archive format.
Does OpenWater have ads?
No, OpenWater is ad-free. As an open-source application, it focuses on providing a clean and uninterrupted user experience without advertisements.
What are the advanced visualization features in OpenWater?
OpenWater offers advanced visualizations such as flights drawn bold, slow sections fading back, fall markers, and a 'Runs view' that stacks each run in its own lane for clarity. You can also replay sessions with a playhead and speed heatmap.
Is OpenWater suitable for beginners or advanced users?
OpenWater provides detailed metrics and advanced visualizations that are beneficial for advanced users looking to fine-tune their performance. However, its simple one-tap start and offline functionality also make it accessible for beginners.
