Rather than only sticking with the old-fashioned method of clipping coupons from the newspaper or printing out coupons you find online, grocery coupon apps can save you a lot of time – and money.

You can source coupons from coupon aggregator sites, circulars from retailers, local newspapers and more. Review store coupon policies so your strategy holds up at the checkout counter.

The more advanced, impressive and secure option for mobile coupons is an actual bar code that appears on the phone's screen. This barcode can be read by standard 1D or 2D scanners as if it was a paper ...