Agile Compass/Savvy Compass is an easy to use, high precision compass app that displays your current location coordinates and direction you’re heading. It is a great tool for both indoor and outdoor activities. You may need to calibrate the compass sensor once for correct results.
Check out the live camera feature with compass ON for people who like to want to see the context. Just point the phone camera facing front and the camera will turn on automatically.
Make sure your device has magnetometer for the application to function properly.