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Cash-back apps look interchangeable from the outside. In practice, the difference between the best and the worst over a year of normal household spending is several hundred dollars.
We ran the same basket of common purchases through every major cash-back portal over a six-month window. The winners came down to two questions: which app had the best rate the moment we needed it, and which one actually paid out without friction?
Rakuten still leads in North America thanks to retailer coverage and reliable quarterly payouts. ShopBack wins for international shoppers and for boosted-rate events on major brands. Stacking either with a flat-rate credit card is the simplest setup that consistently beats every other approach.