RaceDroid Pro GPS OBD2 Dyno is a professional car performance meter that measures car performance for flat road runs, acceleration, and travel time for 60ft, 330ft, 1/8 mile, and 1/4 quarter mile. This application can use many data sources, including accelerometer, internal GPS, external Bluetooth GPS, and OBD2 reader. However, for best accuracy, it is recommended to use an external GPS or OBD2 reader with a high refresh rate.

The tool is very accurate for accelerometer and measures car speed with an error of just 1-2% off the car speed sensor. With no need to press any buttons, just drive, measure, and review the results when you want to. The app also features a dyno with a dynamic power graph and torque graph over RPM, which allows you to store the best results and compare them with others. Please note that this application requires some knowledge and initial setup, and it is not a click-and-go solution.