Actually app is available couple of months mostly used inside local community.
No i believe the app is stable enough, so i can try show it to the public.
It has a start timer mimics Optimum Timer beeper scheme, accompanied by vibrations.
For a newbies or solo training there has a prediction feature shows are you going to be late or too early on start line
and help you do a starting procedure suggesting the time to turn and vibrating then it's time to jybe.
For the practicing and gear tuning it is very handy to see the top speed for previous tack and the history.
So you can tune the gear, make a few tacks, check if top speeds got better and tune again.
Complete manual available here alexolaf.github.io/.../