Want to save money on all-natural and organic brands you buy at the supermarket? Download the free app Checkout 51 on your smartphone. Every Thursday, the app posts deals on a wide variety of food, beauty and other products you normally find at your local supermarket. Choose the deals you like, purchase the items and then upload your receipt to the app through your phone. When you reach $20 in savings, Checkout 51 sends you a check. Even items like fruits, vegetables and milk are part of their money-saving, cash-back program.