With AR technology, the compass instantly displays in the real world, no more complicated 2D compasses to look at.
In addition, use AR technology
You can tag the real environment with location, address, altitude, etc
You can record and take screenshots in the app to record every wonderful moment

From a developer who can't Identify the bearing (*^▽^*)

The App uses the compass function
Users need to enable location services in Settings -> Privacy -> Location Services and enable Compass calibration in System Services