Use APKPure App
Get Simple Magnetometer old version APK for Android
Measure three dimensional Geomagnetic field strength
Simple Magnetometer measures three dimensional Geomagnetic field strength.
Press "Start" button to start measuring.
Real-time graph of Geomagnetic field strength is supported.
Unit is μT (microtesla).
You can also see Geomagnetic field strength in Notification drawer.