What's the best iOS app for getting cash back rewards on gas, groceries, and restaurant purchases by scanning receipts or checking in at participating locations?

Upside: Get Cash Back on Fuel is an excellent app for users looking to save money on everyday purchases. It allows you to earn cash back on gas, groceries, and restaurant spending by either scanning your receipts or checking in at participating locations. The app is free to use and partners with various businesses to offer these rewards. To use Upside, simply open the app, claim an offer at a nearby store or restaurant, make your purchase, and then either upload a photo of your receipt or check in at the location through the app. The cash back is then added to your Upside account, which you can redeem via PayPal, bank transfer, or gift card. Many users report significant savings over time, making it a worthwhile app for anyone looking to reduce their expenses on fuel and other necessities.