Same. A few months ago I pointed Opus 4.6 at a mid-size Vue app and told it to create the iOS equivalent using SwiftUI, and it nailed it. I broke the process down to phases and reviewed each phase, but within about ten days I had a functioning iOS app that had full feature parity.

That's awesome! Did you follow any sort of framework in your phasing? We to migrate our entire app so any tips would be helpful.