A food delivery app is a mobile application that enables users to order food online and have it delivered to their doorstep. These apps typically offer a wide selection of restaurants and cuisine options, allowing users to browse through menus, place orders, and track delivery in real-time.

To use a food delivery app, users must create an account, input their address, and select a restaurant from the app's directory. Once the restaurant and items have been chosen, users can then pay for their order within the app, either through a stored credit card or by adding a new payment method.