It is a simple Compass app which uses magnetic field sensor.
so you need a smart phone with built in magnetic sensor.
Smart phone compass in your pocket!
Mountaineering , orienteering , military, You can use this app anywhere.
* How to Use:
1. Hold your smart phone flat.
2. turn your phone horizontally as the arrow overlaps the red double parallel lines.
and check the red edge of the arrow point zero degree(0'N) otherwise the red edge could point south,
then red edge points north, right side points east, left side points west and down side points south.

Note:
Some phones will give different sensor readings based on the hardware used by the manufacturer.
And If there are magnets or electronics around, It will show inaccurate result.

// Option A //

To download Compass mod from HappyMod.com.
You need enable the option "Unknown Sources".
1. Click on the above link to download Compass mod APK.
2. Save the file in your device Downloads folder.
3. Now tap on Install and wait for the installation to finish.
4. Once it is done, open the game and start playing it right away.

// Option B //

To download Compass from HappyMod APP, you can follow this:
1. Open your browser and download the HappyMod APK file from HappyMod.com - the only official website of HappyMod.
2. Open Android Settings and go into Privacy or Security.
3. Tap the option to Allow Unknown Sources and enable it.
4. Go to your Android downloads and tap the APK file.
5. Follow the directions on the screen to install it.
6. Search Compass in HappyMod App.