Hey friends! Databack is a nice app. Everyone must try it once. The concept of this app is bit unique. You earn data if you use data. Yes! And how to use your data? You can you your network data or Wi-Fi 3G 2G which ever you have. And app that you can use are whatsapp, hike, facebook, instagram and many more App’s that you use regularly. The design of this app is good. Evn the features and function are very easy to use. This app is very useful actually many times the data you are using don’t count this is the draw back of it but still its worth giving a try. Thankyou: );