Have less lag and better sensitivity within the game.
If you like high sensitivity, you will like using this app, as it makes the screen faster, to help people who are unable to access the game, or for those who have a cell phone that does not have the DPI function (smaller width) .
Furthermore, the FF has less lag, precisely to improve the performance of inferior devices.
Finally, there is a tool that aims to show various settings that you can test on your Android device, to improve the gameplay.