They look and feel quite similar. Both use a declarative approach to UI development.
I think there are fundamental changes under the hood, though. For example, SwiftUI uses structs(value types) to build views but Kotlin only has classes which are reference types.
extremely similar to Flutter, SwiftUI is a sort of more wonky FP-y approach and they have a lot of work to do to flesh out the API still, we'll know more then