AI Engineering

App Intents implements App Intents for Siri, Shortcuts, Spotlight, widgets, Control Center, and Apple Intelligence. Use it when exposing app actions or entities to system surfaces.

Apple On-Device AI helps you choose and implement local model runtimes on iPhone, iPad, and Mac using Foundation Models, Core ML, MLX Swift, or llama.cpp. Use it when building private AI features, running LLMs on Apple Silicon, or converting models for Core ML.

Audio Accessory Kit supports automatic audio switching for paired third-party Bluetooth headphones or earbuds. Use it when a companion app registers an accessory or an app extension reports placement or connected-source changes.

Authentication implements iOS sign-in flows with AuthenticationServices and LocalAuthentication. Use it for Sign in with Apple, passkeys, OAuth web auth, Password AutoFill, credential-state checks, token validation, or biometric re-authentication.

CloudKit implements and reviews iCloud data sync for iOS and macOS apps using CKContainer, CKRecord, CKQuery, CKSubscription, CKSyncEngine, SwiftData, and iCloud Drive. Use it when handling sync setup, conflicts, account status, or CloudKit errors.

Core Data helps build and review persistence for apps using NSPersistentContainer, background contexts, fetched results controllers, batch operations, and staged migrations. Use it when working on Core Data threading, history tracking, or list-driven UI without SwiftData.

Core ML Swift Integration shows how to load Core ML models, configure compute units, and run predictions in iOS apps. Use it when integrating .mlmodel or .mlpackage files, batching inference, or profiling on-device performance.

Core Motion reads accelerometer, gyroscope, device motion, pedometer, altitude, headphone motion, and submersion data in Swift apps. Use it when you need sensor input for movement tracking, activity detection, or motion-based interactions.

CryptoKit uses Apple CryptoKit for hashing, HMAC, authenticated encryption, signing, key agreement, and Secure Enclave-backed keys in Swift. Use it when replacing CommonCrypto or implementing cryptographic primitives in iOS apps.

Image extracts text and key information from images with a vision LLM. Use it for screenshots, diagrams, photos, or any .png, .jpg, .webp, .gif, or .tiff input.

Api Design Safety helps prevent REST API response design mistakes such as field mix-ups, ambiguous return types, and inconsistent empty values. Use it when designing or changing API responses and handling returned data.

Chen Yun Demo packages a personal digital twin with design methods, communication style, life experiences, and values. Use it for private backup and memory support, not for impersonation.