I've been using this app for a year now and received almost $100 on things I was going to be buying for my house regardless.
How it works:
Download app named, IBOTTA.
Start profile, which is super easy and FREE.
The app will ask for your location so you can see the qualifying stores around you and they will have offers that you can add to your account offers.
You go shopping and save your receipt and take a picture of it. Simple as that.
Of course, the rebates are never super high. Apples $.25, chips $.50, bleach $.75 for example.
*There are ways to earn more money through bonuses and being a part of a team.
They will even include known companies that you may be shopping at and receive a %3 or %5 cash back from like Joann's Fabrics, Buffalo Wild Wings, Charlotte Russe, Express, and even Uber.
Once you hit $20 the app will let you select to add your money to a pay pal or to gift cards to participating companies. I was able to pay my family gift cards for the holidays without extra money coming out my pocket.
You can get a $10 sign on bonus and join my team with referral code: checqgf