GPS Laps is a free lap-time tracking app that lets you measure and track your laps. You can track your laps with your phone's built-in GPS, using either the phone's built-in GPS or an external GPS receiver.

You can measure the time gap to the best lap and the speed of your lap. The measurement track information is saved to your device's storage.

The app also has the option to create a lap-time circuit, so you can measure the times of multiple participants, in a race or a practice. The app can measure the times of the participants in a circuit, in a race, or in a practice.

The app also has an option to set the speed of the measurement, so you can have a faster or slower speed.