"Up Side" is a financial technology platform designed to help users earn rewards on their everyday purchases. By using the app, customers can receive cash back when they shop at various retailers, both online and in-store. The platform partners with numerous brands to provide users with a wide range of options for earning rewards. The app operates by allowing users to link their debit or credit cards, making it easy to track spending and automatically apply rewards. Users can redeem their earnings for cash or gift cards, making it a convenient way to save money while shopping.