A travel app built using React Native is a mobile application designed to assist users in planning and organizing their travels. The app provides a user-friendly interface that allows users to easily browse through different destinations, view information about attractions and accommodations, and book flights and hotels. The app is built using React Native, a popular framework for developing mobile applications that allows for cross-platform compatibility across both iOS and Android devices. This means that the app can be downloaded and used on a wide range of mobile devices.