GPS Race Timer is an app that allows you to measure the acceleration times of your vehicle. The app supports drag races such as 1/4 mile races or speed-based races such as 100 - 200 km/h and can measure up to two times per race. The app is designed so that it does not have to be operated while driving, everything can be set up in standstill. The measurements are then performed automatically. You can save the race results locally on your phone for later access.

The app comes with predefined timer settings such as 60 ft, 1/8 mile, 1/4 mile, 1/2 mile, 1 mile, 0 - 60 mph, 0 - 120 mph, 50 - 75 mph 60 - 120 mph, 0 - 100 km/h, 0 - 200 km/h, 80 - 120 km/h and 100 - 200 km/h. However, you can also adjust these timers to your needs. To use the app, check the timer settings on the start screen. If they are okay, place your phone in your car so that it has good GPS reception and does not move too much, then you can start the acceleration test. You can adjust the timer configuration in the settings screen. Then go back to the race screen and follow the instructions above.

Overall, GPS Race Timer is a useful app for car enthusiasts who want to measure the acceleration times of their vehicles. The app is easy to use and does not require any operation while driving. The measurements are performed automatically, and the results can be saved locally on your phone for later access. The app also comes with predefined timer settings, but you can adjust them to your needs.