Have your own reward app without any 3rd party conversion tracker. This app has a built-in installation conversion tracking system. Moreover, you can integrate / inject your Android Studio or Unity game into this app.
Demohttps://codecanyon.net/item/mintreward-gaming-edition-of-rewards-app-incl-backend/23686635
Downloadhttps://www.filecad.com/a4i0/MintReward-v1.0.5---gaming-edition-of-rewards-app-incl-Backend.rar