Master UIViewController lifecycle, UIView hierarchy, Auto Layout, UITableView, UICollectionView, and navigation patterns.

Build iOS apps with SwiftUI views, property wrappers (@State, @Binding, @ObservedObject), NavigationStack, and animations.

Fetch data with URLSession async/await, encode/decode JSON with Codable, and persist data with Core Data and UserDefaults.

Design maintainable apps with MVC, MVVM, delegation, dependency injection, ARC memory management, and XCTest.

Integrate push notifications, Core Location, camera, StoreKit 2, and master the App Store submission process.