APPS that save big bucks

Seems like we could use a list of Dollar saving apps. I have a brother that works for a grocery store. The store is Stop and Shop / Giant chain. They work with an app called Flashfood - Grocery deals. The App is really incredible for sales. It goes far beyound any sales at the grocery store. He just brought by some beef PotRoasts that were.. $ 4 for 5 lb roasts. That was $4 for the whole roast.. not per pound. Deals very by location. The deals could be on just about anything in the store.

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Im sure there are other Apps similar but if you shop at the Stop and Shop /Giant Grocery Store chain... give it a try. This chain is along the Atlantic coast predominantly. I was skeptical at first but its the real deal.

Do you guys know of other apps similar that can save our members $$$.?