axiom▌

Purpose: Build reliable SpriteKit games by mastering the scene graph, physics engine, action system, and rendering pipeline iOS Version: iOS 13+ (SwiftUI integration), iOS 11+ (SKRenderer) Xcode: Xcode 15+

Use when:

Purpose: Build 3D content, AR experiences, and spatial computing apps using RealityKit's Entity-Component-System architecture iOS Version: iOS 13+ (base), iOS 18+ (RealityView on iOS), visionOS 1.0+ Xcode: Xcode 15+

SwiftUI debugging falls into three categories, each with a different diagnostic approach:

iOS provides bit-perfect output by default to USB DACs — no resampling occurs. The DAC receives the source sample rate directly.

Comprehensive guide to implementing haptic feedback on iOS. Every Apple Design Award winner uses excellent haptic feedback - Camera, Maps, Weather all use haptics masterfully to create delightful, responsive experiences.

Command-line interface for Instruments profiling. Enables headless performance analysis without GUI.

Direct SQLite access using GRDB.swift — a toolkit for SQLite databases with type-safe queries, migrations, and reactive observation.

Type-safe SQLite persistence using SQLiteData (pointfreeco/sqlite-data) by Point-Free. A fast, lightweight replacement for SwiftData with CloudKit synchronization support, built on GRDB (groue/GRDB.swift) and StructuredQueries (pointfreeco/swift-structured-queries).

You MUST use this skill for ANY computer vision work using the Vision framework.