CheckPoints miles rewards - DL miles: 500 for 3750 CP or AS miles: 1000 for 8100 CP. There are also gift cards (Amazon, Home Depot, etc) in various amounts.
Note: scannable items change fairly often, right now there are 5 ice cream items, each worth 30 points per scan.
2nd Note: if you are fairly near a grocery score, you can scan items that you might already have (including just the bar code if you save it!)
3rd Note: app resets itself at midnight PDT.
4th Note: You can only "check in" and get points 5 places a day, so we try to use our 5 check ins on the 10 point gold star nearby places. You can check in more times but you won't get points.
5th Note: each scan gets you a "coin" or two which you can play for additional points, from 0 to 50,000, most are worth 20 points, or an occasional 50; I've never gotten more than 50.
Next bonus code to use? Samplynn