Android Giveaway of the Day - 3D Ball Compass

A 3-dimensional, stabilized ball compass. The perfect combination of simplicity, beauty and performance.
Features:
* Beautiful designed ball compass
* High precision and stability (special filter algorithm)
* Highly responsive (uses gyroscope)
* Various calibration methods
* Nothing more, just a compass. But a good one (I hope ;-)

This app is being continuously improved further. It also serves as a testing ground for my other compass app "AR GPS Compass 3D". New features / improvements to this app will also find their way in there, eventually.

Your feedback is highly appreciated!

Permissions explained:
Access coarse location: This permission is necessary to fetch information about the geomagnetic field at your current position.

Thats all for now, have fun,
Alex :-)