RaceTrace
Price: £10.99, iOS only
Racetrace’s technical graphs for lap data are good, with a video tutorial to talk you through them. The app uses GPS to automatically create a custom track – drive one lap and place the start/finish line on a detailed satellite map, so you don’t have to look up GPS coordinates. It also reset the clock when the line was crossed. The timer was accurate, but results didn’t always save. Updates are coming, as is an Android version.
