Flutter` is a popular cross-platform tool developed by Google that allows developers to build natively compiled applications for mobile, web, and desktop from a single codebase. As a native iOS developer, the author has been impressed with Flutter's ease of use and learning curve, finding it surprisingly familiar compared to Swift and SwiftUI. The author appreciates the ability to work on multiple platforms from a single framework, which is a significant advantage over traditional platform-specific development. However, they are curious about how easy it is to bring in third-party dependencies for multiple platforms. Overall, Flutter seems like a promising tool for developers looking to expand their reach across different platforms.