Hi I'm a person who created the android app for windsurfing (WindRace). I thought that the app will satisfy all the needs of windsurfers. The app providers the starting procedure countdown, it records GPS track (GPX is supported) and generates the stats report (with the trace, and charts), provides voice notifications (speed, countdown, sos) and SOS button.Unfortunately the amount of installs is pretty small.

I haven't enough feedbacks to get the good understanding of the needs. Will be happy if someone will try it and give the feedback. The app is free contains some ads (should not be annoying).