Flutter is Google's mobile app SDK that enables developers to build and deploy visually attractive, fast mobile apps on both Android and iOS platforms with a single codebase. It offers several advantages for mobile app owners, including faster development speed, reduced production costs, and the ability to create beautiful app UIs with smooth animations. However, Flutter is still in beta and may have some limitations, such as fewer libraries and support compared to native development, and continuous integration issues. Despite these risks, Flutter has many more advantages than risks and can be a great choice for business and development teams looking to build high-performance mobile apps that fit their custom needs and requirements.