WhiteMobi offers two methods of informing you about a users reward.
In case you are managing a users balance on your own servers, WhiteMobi can send a serverside postback for every completed transaction.
To ensure that users receive their virtual currency or premium service after successfully completing an offer or payment, you need to create a callback URL on your server. WhiteMobi is going to request this callback URL whenever a new transaction has been completed.
If you are managing the users balance on the client, you can use WhiteMobi SDK to fetch the new rewards per user from the WhiteMobi Virtual Currency Server on a regular basis.