Lap times can be measured by using GPS of the phone. The time gap to the best lap is displayed while measuring it. If the sector is set, each sector's gap is displayed. Past lap times can be confirmed from the history screen.

The measurement using an external GPS receiver by Bluetooth is possible.
To cmmunicate with external GPS receiver, external GPS receiver should be able to send NMEA0183 RMC sentence with SPP(Serial Port Profile).

Log of the measurement data can be recorded by NMEA0183 RMC sentence (the measurement data acquired from the terminal is output as it is, log format might change depending on the specification of the terminal).

By using recorded log, the speed and the track line can be analysed.

Measurement track information can be made by using Google Maps. Two or more measurement sector can be installed in the made measurement track, and the measurement track can be set as a circuit or a section.

Measurement track information for major circuits is set beforehand.

Operability confirmed GPS Devices:
Qstarz BT-Q1000eX
Qstarz BT-Q818XT

// Option A //

To download GPS Laps mod from HappyMod.com.
You need enable the option "Unknown Sources".
1. Click on the above link to download GPS Laps mod APK.
2. Save the file in your device Downloads folder.
3. Now tap on Install and wait for the installation to finish.
4. Once it is done, open the game and start playing it right away.

// Option B //

To download GPS Laps from HappyMod APP, you can follow this:
1. Open your browser and download the HappyMod APK file from HappyMod.com - the only official website of HappyMod.
2. Open Android Settings and go into Privacy or Security.
3. Tap the option to Allow Unknown Sources and enable it.
4. Go to your Android downloads and tap the APK file.
5. Follow the directions on the screen to install it.
6. Search GPS Laps in HappyMod App.