Hello I have created a system where after user download your app and click buy option he/she can pay you a fixed fee to activate/open new features inside app.
Example - Suppose you have 5 pages on the app. 4 Pages FREE to open. 5th Page is secure. When a user pay only then it will be open. This payment can be done by Paypal , Paytm, OnlineBanking , Credi Card anything. I want to sale this app Idea.
I want the community to set a price for this . Than You