Ionic is a popular open-source framework for building cross-platform mobile applications using web technologies such as HTML, CSS, and JavaScript. It allows you to create beautiful and performant mobile apps on multiple platforms, including iOS, Android, and the web. Ionic offers a wide range of pre-built UI components and plugins to speed up your development process and access a large developer community and community-contributed resources. Choosing Ionic for your app development project can save you time and money while delivering a high-quality mobile app.