It shouldn’t be necessary, but grocery shoppers who don’t check receipts are likely paying too much. Catching an error can lead to getting items for free.

Could grocery-receipt scanner apps be your secret savings weapon at the supermarket? Lately, inflation in the checkout aisle hasn’t been too bad — in the last year, food prices have only climbed 2.3%, ...

Grocery stores are no different and the arrival of self-checkout stations, where shoppers scan and bag their own food items, ...