【實用運動app】Transponder|最夯免費app-綠色工廠好玩App

Transponder app for yacht race tracking at Sailtracker.net. Transponder uses your iPhone to communicate realtime position and performance data to the Sailtracker website where a race can be watched live or later via playback. This version of the app only works with Sailtracker. The Pro version allows connections to other tracking sites.Note: continued use of GPS running in the background can dramatically decrease battery life.