Compass is 90° off, despite calibration

[Billbad]

In the windy app, compass arrow is usually wrong, despite other apps demonstrating proper direction after calibration routine. Samsung Galaxy Note 9, Android 9, Windy 20.1.7

EDIT: Compass is correct in horizontal screen (top to the left), but 90° off in vertical.

[Ingram1225]

@Billbad compass is actually 180° off. LGV30.