Please take note that iOS users can refund the app that you have purchase if you find that it is unable to deliver its intended function as promised. I have manage to get a refund for the paid app that I download but did not fulfilled as what is set out in their sales page.

1. Go to your iTunes App
2. Select Account – Account Info
3. Login with your Apple ID account
4. Scroll down to Purchase History and click on See All
5. Click on the arrow icon beside the order date of the app you want to get refund
   
6. Click on Report a Problem on the app line item
7. It will bring you to the browser to fill in the problem
8. Click submit and the money will be refund to you
   
9. The app will no longer receive software update

This is something Apple will not tell you openly. Hope you can get your refund sucessfully like me.