Mobile event booking apps use a range of technologies to help users book events on the go. This includes technologies such as GPS and location-based services, mobile payment platforms, as well as back-end systems like databases and server technologies. GPS and location-based services allow users to find events happening in their vicinity and make bookings accordingly. Mobile payment platforms such as Apple Pay, Google Pay, and PayPal enable users to make payments quickly and securely. Databases such as MySQL, MongoDB, and Firebase store the data associated with the app, such as user accounts, event information, and booking details. Server technologies such as Node.js, Express.js, and PHP are used for the back-end operations of the app and help to ensure that it runs smoothly. Finally, front-end technologies such as HTML, CSS, and JavaScript are used to create the user interface of the app, giving users an easy and intuitive way to book events.