FR only works at selected Shell stations, and the stated bonus TMo Tuesday discount is only off the credit price, not the cash price. Otherwise, it's only 5 cents off the cash price. The closest Shell doesn't take FR, the other two closest Shells have old, slow or clunky pumps, if they work at all. FR app doesn't have a FR station locator, and Gasbuddy doesn't have a way to report that a station is FR eligible. This app is really is not worth the trouble.