How to use the new app that helps you save time and money with food and beverages

We live in an age of "all or nothing" loyalty cards.They're easy to get, but they're hard to keep.The best ones come with rewards or they have a lifetime fee, but if you're not a customer of the retailer, you can't get them.There are, of course, a handful of card brands that offer rewards, but most are limited to one type of service or the other.And, of all of the things you can do to save money, ...