Tachometer - RPM measuring has been renewed! Visualize and save RPM data of your rotary devices. Just put your phone on the rotary table and leave the rest to the app. The app uses your phone's IMU sensor to perform calculations. Accuracy of results depends on your phones sensor resolution. Usage areas: - Calibrating motors. - Control revolution values of record player, phonograph, gramophone - Measure revolution per minute for any of rotaty device. Features: - Measure instant RPM value - Calculate avarage RPM value - Save results for motor calibration. Important info: * See maximum value on the screen. * The average rpm value is reset by clicking an empty position. * When the REC button is clicked, recording starts. Registration ends at the next click. * RPM data and measurement time is saved as "RPM_data.csv". * You can reach saved data from apps local files.