So you put USD on Starbucks gift cards, sell the code to be used for a drink and receive the money in BTC. You're amassing BTC from disparate sources but it seems you'd be paying a slight premium, however you wouldn't need to register with any exchange.

You do get a pre-loading bonus of bitcoins to play with and you can use those to generate profits - like 1000 people put $10 worth of BTC on the app, spend $5 on a coffee then you have $5000 in BTC to "play" with, eg to sell on.

This does all look pretty suspect.