GPS with AR-Compass for Android
Unity application for android using the Wiktiude APK for AR and image tracking.
Install the apk file on your android device (or build from unity project to device), give permission for both location and camera. If this is not asked on start you can add permissions in settings, apps and AR-Compass. A restart of the app is needed.
For the app to work you need the trackerImage found in the same folder. Print this image on paper or just display the image on a screen. Use the camera with the application to track the image, a 3D compass should now appear on the image.