SwiftUI is not crossplatform in the context of Flutter, which builds to iOS, Android, web, macOS, Windows, and Linux, natively. I've only played around with it

SwiftUI is not crossplatform in the context of Flutter, which builds to iOS, Android, web, macOS, Windows, and Linux, natively. I've only played around with it a little bit, but it's quite an impressive achievement. It doesn't quite feel native, but it's pretty damn close. If you are familiar with React Native, it is very similar in both its coding style and in how it works. It's like the virtual DOM with the middleman of the DOM stripped out.