SwiftUI universal apps do this even better by automatically using the appropriate backing controls for the targeted platform — e.g. a SwiftUI `Button` translate

SwiftUI universal apps do this even better by automatically using the appropriate backing controls for the targeted platform — e.g. a SwiftUI `Button` translates to `NSButton` on macOS and `UIButton` on iOS. I think it's ultimately what Apple intends to make the flagship way to develop on their platforms. Catalyst exists mostly as a way to pull existing iOS apps and iOS developers under the Mac umbrella.