It doesn't give you credit for purchases made on the SAME card each time. Currently I've gotten credit for 1 of my last 4 purchases. I have only been able to scan a receipt once which I did not get credit for bc the app said the receipt did not have a date on it. The date was on it. And in the picture of the receipt I sent and clearly legible. So if you want something that may or may not work this is the app for you.