Don't waste your time. really rubbish app. Bought the reader for a fair price & I thought the rates were reasonable in comparison to others. After 2 days of trying to get it set up I just wasted another 2 hours and still not working. Highly frustrating. Avoid. Edit: After reading other reviews with similar problems I have deleted the app and shall be returning the card reader for a refund. In summary: a pointless waste of time .