Provides real-time information on U.S. river locks and dams. Get contact details and see upcoming locks for your waterway journey. Essential for boaters and canoeists navigating rivers.
5.0(4 ratings)
Free
Best apps like TowRiver
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3.8 avg rating
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Updated October 2026
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SEAiq USA by Sakhalin, LLC
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🗺️ Navigation
4.7😊(501 ratings)
FreeIn-App Purchases
Navigate US waterways with detailed NOAA and US Army Corps of Engineers charts. Features include waypoints, routes, tracks, weather overlays, and an anchor alarm. Offers a 7-day evaluation period before an in-app upgrade is required for full functionality.
What We Love
- 📊 Accurate and detailed navigation charts
- 💰 Excellent value for price
- 🆓 Free NOAA chart downloads
- 📱 Works offline after chart download
- 🚢 AIS data integration
- 📍 Easy waypoint and route creation
- 🔄 Seamless chart quilting and management
- ⚓ Anchor monitoring feature
- 📚 Comprehensive in-app documentation
- 🛠️ Responsive developer support
- 🔗 Active Captain integration
- 🌊 Tide and current data options
- 📤 Easy GPX export/import functionality
- 🎯 Intuitive user interface
- 🔌 NMEA 0183 data integration
- 🗺️ Both raster and vector chart support
- 🌙 Night vision-friendly display
Room to Improve
- 🐢 Slow performance on older devices
- ❌ No way to delete imported tracks
- ❌ Cannot rename imported tracks
- ⚠️ Discontinued Active Captain data support
- 🔐 Limited free version features
- 📵 Requires current device for responsiveness
- 🔗 Difficulty linking iPad to iPhone GPS
- ⏱️ Slow chart display and panning
- 🔄 Long Active Captain synchronization times
