SEAiq USA

SEAiq USA is a full-featured marine navigation app for exploring U.S. waters. It automatically downloads and displays charts from NOAA and the U.S. Army Corps of Engineers for selected regions, with support for vector charts, waypoints, routes, tracks, and chart measuring tools such as EBL and VRM.

Additional features include night color modes, anchor alarms, weather overlays for wind and isobars, and Wi-Fi-based NMEA and AIS connectivity. Charts can be viewed without a purchase, while premium navigation features are available during a 7-day evaluation period before requiring an annual subscription. Continued background GPS use may significantly reduce battery life.