The app works, sort of. When using Honey on websites like papajohns, it'll apply a bunch of different codes, then be stuck on a pure white screen. I'm not sure if it worked there. On Ebay, it doesn't seem to even allow you to try different coupon codes, as clicking the icon brings up a menu that I guess allows you to 'follow' ebay, whatever that means, something about .1-2% rewards, which I don't understand, and a link to find out what kind of shopper I am.
Not sure if this pluggin works, but it does something, I guess.
(It has saved me $5 from ordering online from papajohns)