high precission acustic rpm measurement of all kind of motors and model types. Max 60. 000rpm resolution 1rpm. Coming with a full money back guarantee. Try this first no other app has a higher precission or supports more motors and configurations up to 60. 000rpm: electric RC-Helis and Planes with 2-5 bladesall Nitro Planes including Gears and Helicoptersall 2 or 4 Stroke Motors with any number of cylinders including normal Car Motorsfull Frequency Analytics. You will get a timeline over the measured rpm and a full rpm Distribution in the end of the measurement. If you are not happy with this app. Please write me an email and you will get a full refund. Enjoy, Stefan.