Harry's LapTimer Petrolhead is a robust app designed for car enthusiasts, enabling users to record and analyze driving performance through advanced sensor data from their iPhone and external devices. With over 1300 predefined tracks worldwide, it simplifies lap timing using GPS and provides insights into driving habits by allowing users to set their own defined tracks, such as daily commutes. The app offers features for video recording with data overlays, making it easy to share performances with friends or on platforms like YouTube.

Additionally, the app supports online racing, allowing users to compete in real-time and compare performance metrics with friends. It comes in three editions, catering to different user needs, from basic lap timing to professional-grade features such as Multi Cam recording and Health Kit integration. The versatility of Harry's LapTimer Petrolhead makes it a leading choice in the market for those looking to enhance their driving experience.