Comprehensively reviews UIKit code for best practices on modern APIs, architecture, and performance. Use when reading, writing, or reviewing UIKit-based iOS projects, including UIViewController, UITableView, UICollectionView, Auto Layout, or programmatic UI code. Also use when migrating legacy UIKit patterns to modern equivalents. Do not use for SwiftUI-only projects or Combine-only logic with no UIKit dependency.
2026-03-13