This is an experimental app that uses the uses the phone's magnetometer sensor to calculate scale speed.
You just need:
- The app, and
- two similar magnets stuck on a carriage or carriages at a fixed distance apart.
The app reads the passing of the magnets and calculates the speed.
Latest Version
1.00.002Uploaded by
Quoc Bao Tran
Requires Android
Android 7.0+
Category
Free Tools AppContent Rating
Everyone
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Flag as inappropriateLast updated on Jul 21, 2025
Scale speedometer using an Android phone and two magnets.
This is a free, open-source, app that uses the phone's magnetometer sensor to calculate scale speed.
New this version
- Added double back button to exit
Based on a suggestion by Brendan S.