Mobile payment apps are software applications that allow users to make financial transactions using their smartphones or tablets. These apps enable users to pay for goods and services, transfer money to friends or family, and manage their finances conveniently. Popular examples include PayPal, Venmo, and Apple Pay. To use a mobile payment app, users typically link their bank accounts or credit cards to the app. Once set up, they can make payments by scanning QR codes, tapping their devices at payment terminals, or sending money directly to other users. This technology enhances convenience and speeds up transactions in everyday life.