by: Hireface • 19
This compass is a tool to search bearings(azimuth) using the built-in magnetic sensors. It has 3 significant features.
1. Although you may turn the phone into portrait or landscape mode, the heading is fixed.
2. The Camera's view is used for reality.
3. Metal Detector is included to verify the magnetic sensor.
The compass app depends on the performance of your device exactly. If the compass works perfectly, it means that your sensors are perfect, too.
If it is inaccurate, please check that you aren't being affected by a magnetic field. Also, there are several options to calibrate your device.