Any ways or ideas on hiding your device info from apps

So i was wondering if there was anyway possible to hide from a app that you have downloaded it before on your device besides doing a factory reset. This app i am referring to is just a simple gambling platform called vortex777.mobi and i was just trying to play and get the free 10$ but with a diff username given by a whole diff group, however it knows ive downloaded it before so therefore no free 10 haha. Please any ideas or suggestions