It's a smartphone app

It's kind of like coupons. They offer cash back rebates on certain items, mostly groceries. If you buy anything on the list of offers, then you scan the barcode of the item and your receipt to show you bought it, and they put the rebate in your balance. When your balance reaches $10 or more, you can request a payment to Paypal, or I think they offer gift cards now too.
There are several similar apps, like Checkout 51 and Snap by Groupon.