Important: Remember to obey the traffic laws and other applicable laws and to use the Quartermile.app only on closed areas, in compliance with the laws and rules applicable there.
Quartermile.app uses your iPhone's sensors and GPS to give you an accurate picture of your vehicle's performance - whether it's a scooter, a car or a motorcycle.
With the free version, you can use all modes with default values! With our one-time In-App Purchase you unlock all additional values.
Quartermile.app is made to support a wide range of vehicles - whether it has two, four or eight wheels.
Analyze your performance using various statistics such as G-force, maximum speed, average speed, wind and weather.