There are apps to help you shop around and earn money while shopping. There is no need to search around for offers, coupons or discount codes. These shopping apps earn money while you buy an item through these apps. These iOS apps provide the smart way to find out the best discount price for the item you want to buy and apply that money to your account. When you use these earn money shopping apps, you are not locked with any particular shop or manufacturer.
When you shop around next time, use these shopping apps to save money and install one of them on your iPhone in advance.
Ibotta
Ibotta is a free earn money shopping app that pays you cash for everyday purchases. Ibotta has exclusive rebates at various grocery stores and retailers. Through Ibotta app, you can browse a broad range of categories and brands including grocery, apparel, beauty & wellness, electronics, alcohol and much more.
This is how Ibotta works, before you shop, unlock cash back offers, buy featured products at your favorite stores and retailers, submit a receipt or link a loyalty card and get cash back on your shopped items. Ibotta utilizes iBeacons and background location to show you better rebates and in-store offers; you can customize these notifications in the settings.
Download from iTunes
Walmart App: Savings Catcher
This Walmart Savings Catcher app saves you time and money online and at your local Walmart for shopping millions of items at unbeatable prices.
This app can use to make a list for yourself or someone else, share your list on social media. Once you finish your purchase from Walmart, scan your shopping receipt with this saving catcher app. Savings Catcher compares prices on your eligible purchases with any lower prices in your area and gives you any difference in price on an E-gift card. This app helps you to earn money while shopping at Walmart.
Download from iTunes
SavingStar
SavingStar is the smart and simple way to save and earn money while you shop. Earn cash back on your groceries with exclusive freebies, healthy offers and big savings on favorite brands.
SavingStar offers can be worth $5 or more, and you can save 20% on fresh produce and also get freebies such as pasta, candy bars, tuna fish, sugar, baking soda, and more. Finally, you can cash out to your bank or PayPal account, to various gift cards, or to a charity.
Download from iTunes
Checkout 51
Checkout 51 app lets you earn money back when you buy your favorite brands. All you need to do is Install the app, browse the offers that are updated every Thursday, buy the products from any store, take a photo of your receipt to redeem your offer and earn cash back. 
They will mail you the check once your account reaches $20 in savings.
Download from iTunes
Snap by Groupon
Snap by Groupon gives you cash back on everyday grocery purchases – no matter where you shop. Snap app offers work at any store, and you never have to hassle with clipping or redeeming paper coupons. 
Only steps you need to do is download the app, browse the offers from the app before shopping, purchase promoted products at any store and snap a photo of your receipt and get cash in your account.
Download from Website
Shopmium
Shopium offer discounts on all kinds of products and new offers are introduced each week. You can try the great products at reduced prices. Simply buy, take a picture of your receipt, rebates are processed within the app in just 2 clicks and get your cash back. You can get your cash back directly to your PayPal or bank account.
Download from iTunes
BerryCart
BerryCart, one of the shopping app to earn money that offers coupons, deals, and discounts on healthy foods in the form of cash back rebates. When you read a fact, rate a product, or take a 1-question survey, you unlock a cash back discount that you can redeem after buying the product. It’s like a rebate, but without all the paperwork and hassles. The BerryCart map even tells you where the closest stores are that carry each product.
Go shopping, snap a picture of your receipt, and earn cash back rewards. Take your money out with a Paypal account, or we’ll send you a gift card are various retailers including Target, Starbucks, Home Depot, and more.
Download from iTunes
CartSmart
CartSmart offers cash rebates (not points) for your participating grocery purchases. Simply purchase items participating in “SmartDeals”, take a photo of your receipt in the app, and collect your cash back. No waiting to collect a $20 minimum in CartSmart™ when you redeem your rebate via your PayPal account.
CartSmart is also is designed as a shopping list help you to organize your grocery trip and save time in the store. This app lets you collect cash rebates by submitting a photo of your receipt as proof of purchase for participating items. New deals are offered each week and last all week long that offer you enough time to submit your receipt before expiry.
Download from iTunes
iPhone Shopping Apps to Earn Money
These iOS earn money shopping apps give you the flexibility to choose the brands you want from your favorite stores with any brand rebates and deals. Once you buy the rebate products from any store, scan the receipt with your Smartphone app.
You can purchase the products like apparels, cosmetics, electronics and more on offer at any grocery stores, supermarkets, department stores, etc. These apps analyze and find out the deals of the products you bought and put back the product rebate/discount money into your account. Once this money reaches the threshold amount, they will send this money to your bank/Paypal or pay in the form of gift cards.
Most of these shopping apps can earn money by utilizing your phone GPS sensors in the background to locate deals on your local shops. Few of these smart apps use iBeacons and background location to show you better rebates and in-store offers that help you to earn money while shopping.
The best app for me is CashMachine, the yellow one.
They pay very fast, and the minimum payout is 1 dollar.