axiom▌

Purpose: Prevent the 4 most common Now Playing issues on iOS 18+: info not appearing, commands not working, artwork problems, and state sync issues

Time cost: 15-20 minutes (if MPNowPlayingInfoCenter already working)

Complete reference for converting OpenGL/DirectX code to Metal.

Purpose: Comprehensive reference for storage pressure, purging policies, disk space, and URL resource values Availability: iOS 5.0+ (basic), iOS 11.0+ (modern capacity APIs) Context: Answer to "Does iOS provide any way to mark files as 'purge as last resort'?"

These patterns use NWConnection with completion handlers for apps supporting iOS 12-25. If your app targets iOS 26+, use NetworkConnection with async/await instead (see axiom-network-framework-ref skill).

Synchronously access actor-isolated state when you know you're already on the correct isolation domain.

System photo picker for UIKit apps. No permission required.

Time cost: 5-10 minutes

Guide to Xcode 26's Recording UI Automation feature for creating UI tests through user interaction recording.

AXe is a CLI tool for interacting with iOS Simulators using Apple's Accessibility APIs and HID functionality. Single binary, no daemon required.