It is always very annoying when you realize that you have just wasted your money on an app which either does not work or is not your cup of tea. If you have bought the app from Google Play store then no worries as now you have got the option to try it out. Once you have purchased the app, you will have a 2hr grace period in which you can return the app for a full refund.
You don’t need to tell them the reason that why you are returning the app. All you need to do is to Open the Play Store app and then go to order history. In order history find the app or game that you are need to return. After this just tap Refund. Here you go, its that easy. The app will be uninstalled from your phone and all of your money will be refunded.