Ive been using this app for over a year now and its one of the most well supported apps I own.
For anyone doing autocross or any highperformace driving days at a track this app is what you want.
Ive got over 200 laps at my local track this summer and gigs of synced video. Having this app has help me improve my line through corners and pick up 3 seconds average (2.2km track) which is HUGE.
Datnewf about Harry's LapTimer Petrolhead, v14.0