Compass : Smart Compass 1.8.8A

Compass : Smart Compass is a program with which you can use an Android smartphone or tablet as a compass to measure azimuths, as well as search for a landmark (the north magnetic pole), using the built-in magnetic sensor.

There is a landscape and portrait display mode, image output from the camera for greater clarity (can be disabled), there are metal detector functions with magnetic field strength display and the possibility of manual azimuth calibration.