Lapforge: Track Day Lap Timer app iconLapforge: Track Day Lap TimerTimes every lap from your phone's GPS, with your best and last lap in big digits on the dash.Free on the App Store

Race track maps: 506 US circuits

A map of every road course, oval and kart track in Lapforge's circuit list, each drawn from its OpenStreetMap outline, with the lap length in miles and kilometers.

Heading to an HPDE, a club track day or a karting session? Open the track to see its shape before you arrive, and time your laps there with your phone's GPS.

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Track data © OpenStreetMap contributors, ODbL. Download the circuit data. Lengths are measured along the mapped racing surface.

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Lapforge: Track Day Lap Timer app icon
Lapforge: Track Day Lap Timer

Times every lap from your phone's GPS, with your best and last lap in big digits on the dash.

Get it on the App Store