Check the version of The Best Vibration Meter without adverts.
The Best Vibration Meter is an app which can measure the vibration (seismograph, body tremor, seismometer).
This app uses the phone sensors to measure vibration or the earthquake, and it shows a reference as a seismic detector.
You can calibrate your app so that the maximum value is about 10-11.
Check the vibrations with you phone!