Payment apps are digital tools that allow users to send and receive money using their smartphones or computers. These apps often link to a user's bank account or credit card, making it easy to pay for goods and services, split bills with friends, or transfer money to family. Popular examples include Venmo, PayPal, and Cash App. Many payment apps also offer additional features, such as tracking spending, requesting payments, or even investing in stocks. They provide a convenient and secure way to manage finances without needing cash or physical cards. Users can typically download these apps for free from app stores.