Qstarz QRacing is a free lap timing analytics application for motorsports, available on Android. It is designed to be used with Qstarz GT BLE GPS devices, and it provides a range of features for analyzing race data. The app can record video on your phone and overlay it with logged data, allowing you to analyze your performance in detail.

One of the main features of QRacing is its lap timing and plot chart analysis. The app can be applied to drag races and circuit races, and it provides lap, sector, and split time delta comparison. You can also use it in drag modes by speed, distance, Christmas tree, or 0-speed-0. QRacing can auto-detect global circuit tracks, and it provides track ranking to help you compare your performance with others.

QRacing also offers historical session playback, racer and garage management, and the capability of creating or joining race events. You can export session data to CSV format and backup and restore your sessions. The app is available in English, Japanese, German, and Traditional Chinese.

Please note that only Qstarz GT BLE GPS device owners will be able to use this app. QRacing requires Android 6.0 or later, and it is suggested to use version 8.0 or later with 4GB RAM models.