Metal cannot be used on Android. Your business logic can be ported - if it's separated as a library. If you don't want to separate it, Skip can handle bridging a lot of Apple libraries including SwiftUI.
The SDK doesn't quite work that way, your iOS-specific dependencies like SwiftUI and UIKit aren't available. For SwiftUI development, [Skip](https://skip.tools/) has a transpiler that translates your SwiftUI code into Jetpack Compose.
Without Skip, you can still share other code through JNI - similar to Kotlin Multiplatform.