OBD2Max by TFiveR is a free car diagnostic and real-time data display app available on Android. The app is designed to work with most Bluetooth and Wi-Fi ELM327 adapters. The app offers a customizable dashboard and gauges that display information about your car's performance, including speed, RPM, coolant temperature, and fuel level.

One of the best features of OBD2Max is its record and playback function, which works like a dash-cam. It allows you to record your car's performance and play it back later to analyze your driving habits. The app also provides real-time data on your car's performance, allowing you to quickly identify any potential issues.

Overall, OBD2Max is a comprehensive car diagnostic app that provides valuable information about your car's performance. It is easy to use and offers a range of features that make it a must-have for any car enthusiast or mechanic.