Download Nopistons app on Play Market

What is this?

By using this is device, to inspect rotary engine compression, you need only turn pressure sensor into sparkplug hole of your rotary engine and connect other end to your smartphone or tablet pc.


Our smartphone application will do all hard work for you. Such as - finding maximum pressure for each of 3 rotary chambers, calculating engine speed, and, if engine speed different from 'ethalon' 250rpm, normalize measured result, and more..

Use Android smartphone or tablet to inspect compression of your rotary engine

How to buy

We are finishing our first 20 devices and about after several weeks we will start to sell it.
But now you can make pre-order here.


To use our compression tester you need any Android powered portable device meeting minimal requirements.
Android 4.0 or higher
USB OTG support