Is SwiftUI backwards-compatible with iOS 12.x and older?

Question

If I have an app made with SwiftUI, will it work for iOS below iOS 13?

Answer 1

It is compatible with iOS 13+. Here is link to its documentation.

https://developer.apple.com/documentation/swiftui/

---

Even Xcode 10 does not support it. You need to use Xcode 11 which is in beta as of (Jun 3 2019). https://developer.apple.com/tutorials/swiftui/creating-and-combining-views