There are a lot of fitness and all for running and bla bla... But I would love to see a watchapp that keeps me informed on my car like the mercedes one, but using normal data from my phone. So I can use on autocross, I really don;t have a lot of time but if someone helps I can start with the development.
I was thinking of a way that you can let the phone laid flat on your car, and it can read the G forces, speed and some other data.
Thanks