What a greap app! Fantastic design of the homepage as well.
Interesting that they got that through the appstore. Didn't think they allowed barcode scanning apps, but maybe that was just amazon that didn't allow such apps. I think it's a good idea to build this app around fun, and then add the business aspects later.
I would not be surprised though if this app is pulled from the appstore because of some bogus claim and that apple launches a similar feature with a selected partner, but more shopping oriented.