I am building a android app which i would like to have in-app billing for.
I would just like to ask a general question about i-app purchases and hopefully someone can point me in the right direction.
If i want my app to have Pro users, which would be an in app purchase to unlock parts of the app, how would one go about doing this?
Thanks in advance
You should definitely use Managed In-app Products.
Once the product is purchased do not consume it. Google Play Services keep track of all purchased products and syncs it between devices. You just check if user owns given product and disable/enable pro features based on the response.