macOS App Structure

Critical Constraints

• ❌ DO NOT use iOS-only scenes (TabView as root scene) → ✅ Use WindowGroup, Window, or NavigationSplitView
• ❌ DO NOT use UIApplicationDelegate → ✅ Use NSApplicationDelegateAdaptor for AppKit hooks
• ❌ DO NOT forget Settings scene for Preferences → ✅ macOS apps should have a Settings scene
• ❌ DO NOT assume single-window → ✅ macOS apps can have multiple windows; design for it
• ❌ DO NOT use iOS navigation patterns → ✅ Use NavigationSplitView (sidebar + detail) for macOS

Standard macOS App

import SwiftUI

@main
struct MyApp: App {
    @NSApplicationDelegateAdaptor(AppDelegate.self) var appDelegate