We're uncertain whether this topic is suitable for this forum, but we have attempted to develop iPhone apps using ChatGPT (GPT-4) based on the App Inventor 2 tutorial pages. To date, we have successfully created four apps that function similarly to those from App Inventor 2. If you're interested, please check out the link provided above.
"Create an iPhone App which works like App Inventor App called TalkToMe (part 1) using Xcode 12.2 and SwiftUI. I don’t want to use storyboard."
(Talk To Me (Part 1) for iPhone | MIT App Inventor 2 日本語化プロジェクト)
This seems more like a topic about "Xcode & Swift" to me. The possibility of creating iOS apps with Xcode / Swift using ChatGPT has already been addressed in the corresponding topic.