The most precise and simple compass.
Compass for Android Smart Compass App free for android
To use this application, your device must have a compass sensor.
How to use :
-Keep your phone parallel to the ground and turned toward the red arrow that you want to define.
-Compass will display on-screen directions and degrees.
*note:
Your mobile device must have a compass sensor can use this application.
N is North
S is South
E is East
W is the West