RaceTrace is a beautifully simple GPS lap timer and more for iPhone. It displays your performance graphically, immediately pinpointing areas for improvement. Unlike other lap timer apps that have extraneous features and cumbersome interfaces, RaceTrace focuses on the essential elements of driving analysis and is very stable and easy to use.
RaceTrace is intended for track days, autocrossing, high-speed go kart racing, motocross, drag racing, or any closed race circuit. It is not intended for use on public roads!