Builds AlarmKit alarms and countdowns with system Lock Screen, Dynamic Island, StandBy, and Apple Watch presentation. Use for authorization, AlarmManager scheduling, stop/secondary actions, countdown extension handoff, state observation, or Live Activity-backed alarm experiences.

Builds App Clips and their invocation, routing, App Store Connect experiences, size/capability limits, promotion, data handoff, notifications, and full-app migration. Use for App Clip Codes, URLs, NFC/QR, Safari/Maps/Messages invocation, NSUserActivity, or App Group/keychain transfer.

Implement App Intents for Siri, Shortcuts, Spotlight, widgets, Control Center, and Apple Intelligence on iOS. Covers AppIntent actions, AppEntity and EntityQuery models, AppShortcutsProvider phrases, IndexedEntity Spotlight indexing, WidgetConfigurationIntent, SnippetIntent, and assistant schemas. Use when exposing app actions or entities to system surfaces.

Designs private on-device AI for Apple platforms with Foundation Models (including iOS 27 LanguageModel providers, Private Cloud Compute, multimodal prompts, Dynamic Profiles), Core AI, Core ML, MLX Swift, or llama.cpp. Use for local LLM runtime selection, Apple Intelligence chat or tool use, Apple Silicon inference, model conversion/compression, or backend comparison; route Core ML prediction code to coreml.

Builds one-time cross-platform app-data transfers with AppMigrationKit. Use for AppMigrationExtension setup, ResourcesArchiver export/import, transportable resources, progress, cancellation, MigrationStatus, app-group cleanup, recovery, or AppMigrationTester verification.

Optimize App Store product pages for search visibility and conversion. Use for keywords, names, subtitles, descriptions, screenshots, localization, Custom Product Pages, In-App Events, product-page tests, and review-prompt strategy; route submission compliance to app-store-review.

Audits App Store submission readiness and rejection risk across current review guidelines, PrivacyInfo.xcprivacy and required-reason APIs, privacy labels, ATT, StoreKit payments, metadata, entitlements, widgets, and Live Activities. Use when preparing a submission, responding to rejection, reconciling privacy evidence, or separating upload blockers from cleanup.

Integrate third-party audio accessories with Apple audio switching and spatial placement using AudioAccessoryKit. Use when configuring AccessoryControlDevice, handling device capabilities, monitoring accessory placement, or participating in automatic audio routing.

Builds iOS authentication with AuthenticationServices and LocalAuthentication. Use for Sign in with Apple, passkeys/WebAuthn, credential state or revocation, OAuth/web sessions, Password AutoFill, identity-token server validation, and local biometric reauthentication.

Configure AVAudioSession categories, modes, route changes, interruptions, and build low-latency AVAudioEngine node graphs for recording, mixing, and audio processing in iOS and iPadOS apps.

Create media playback experiences using AVKit. Use when adding video players with AVPlayerViewController, enabling Picture-in-Picture, routing media with AirPlay, using SwiftUI VideoPlayer views, configuring transport controls, displaying subtitles and closed captions, or integrating AVFoundation playback with system UI.

Schedules and executes iOS background work with BGTaskScheduler and background URLSession. Use for app refresh, processing, continued-processing tasks, expiration and completion handling, background downloads, background pushes, registration, Info.plist configuration, or launch simulation.

Build alternative browser engines using BrowserEngineKit. Use when developing a non-WebKit browser engine for iOS/iPadOS in supported regions, managing web content/rendering/networking extension processes, configuring GPU and networking process capabilities, checking alternative-engine device eligibility, or reviewing BrowserEngineKit entitlements and Info.plist setup.

Implement VoIP calling with CallKit and PushKit. Use when building incoming/outgoing call flows, registering for VoIP push notifications, configuring CXProvider and CXCallController, handling call actions, coordinating audio sessions, or creating Call Directory extensions for caller ID and call blocking.

Builds eligible CarPlay navigation, audio, communication, EV charging, parking, or ordering apps with template scenes. Use for entitlements, scene delegates, interface-controller hierarchies, lists, maps, Now Playing, dashboard displays, or CarPlay Simulator verification.

Builds or reviews CloudKit and iCloud synchronization with records, queries, subscriptions, CKSyncEngine, shares, SwiftData CloudKit configuration, key-value storage, or iCloud Drive. Use for sync architecture, conflicts, account state, retries, quota, and offline behavior.

Read, create, update, and pick contacts using the Contacts and ContactsUI frameworks. Use when fetching contact data, saving new contacts, wrapping CNContactPickerViewController in SwiftUI, handling contact permissions, or working with CNContactStore fetch and save requests.

Build direct Bluetooth Low Energy central or peripheral workflows with Core Bluetooth, including GATT discovery, state restoration, MTU sizing, and background modes. Use for BLE scanning, peripheral connection, characteristic reads/writes/notifications, or peripheral advertisement.

Build or review persistence in apps that still use Core Data, including managed objects, fetched results, batch operations, persistent history, staged migration, and concurrency. Use for Core Data-only work; route SwiftData adoption or coexistence to swiftdata.

Builds custom tactile and synchronized audio-haptic experiences with Core Haptics, including CHHapticEngine lifecycle, transient and continuous events, dynamic parameters, parameter curves, AHAP files, and device verification. Use when system sensoryFeedback or UIFeedbackGenerator patterns cannot express the required haptic behavior.

Integrates and profiles Core ML models for on-device inference. Use for mlmodel/mlpackage loading, generated or feature-provider predictions, compute-unit selection, MLTensor, Vision integration, MLComputePlan, model pipelines, deployment, or performance analysis.

Builds sensor workflows with Core Motion for accelerometer, gyroscope, device motion, pedometer, activity recognition, altitude, headphone motion, workout motion, and submersion/depth data. Use for motion interaction, steps, activity classification, AirPods tracking, or watchOS depth features.

Read and write NFC tags using CoreNFC. Use when scanning NDEF tags, reading ISO7816/ISO15693/FeliCa/MIFARE tags, writing NDEF messages, handling NFC session lifecycle, configuring NFC entitlements, or implementing background tag reading in iOS apps.

Use Apple CryptoKit for Swift cryptographic primitives. Use when hashing with SHA-2 or SHA-3, generating HMACs, encrypting with AES-GCM or ChaChaPoly, signing with P256/P384/P521/Curve25519 or ML-DSA keys, performing ECDH, HPKE, ML-KEM, or X-Wing key exchange, using Secure Enclave CryptoKit keys, or migrating CommonCrypto code to CryptoKit.

Builds CryptoTokenKit security-token and smart-card integrations. Use for token-driver extensions, token sessions, TKSmartCard communication, NFC smart-card sessions, token-backed Keychain queries, token watching, certificate authentication, APDU handling, or PIN workflows.

Debug iOS apps and profile performance using LLDB, the interactive Memory Graph Debugger, and Instruments. Use for crashes, retain-cycle inspection, hangs, build failures, and generic CPU, memory, energy, or network profiling. Use ios-memgraph-analysis for .memgraph capture, leaks CLI ownership paths, or persistent heap growth; use ios-ettrace-performance for ETTrace capture and JSON.

Protects apps and APIs with DeviceCheck and App Attest. Use for per-device fraud state, App Attest key generation and attestation, request assertions, server verification, compromised-device signals, app authenticity, replay resistance, or sensitive endpoint protection.

Control motorized camera docks and enable intelligent subject tracking using DockKit. Use when discovering DockKit-compatible accessories, implementing camera subject tracking for faces or bodies, controlling dock motors for pan and tilt, configuring framing behavior, setting regions of interest, or building video apps with automatic camera tracking.

Query grid electricity forecasts and submit load events using EnergyKit to help users optimize home electricity usage. Use when building smart home apps, EV charger controls, HVAC scheduling, or energy management dashboards that guide users to use power during cleaner or cheaper grid periods.

Creates, reads, edits, and presents calendar events or reminders with EventKit and EventKitUI. Use for authorization, event/reminder CRUD, calendars, recurrence, alarms, change observation, event editors, viewers, calendar choosers, or SwiftUI wrappers.

Request Screen Time authorization with FamilyControls, pick apps and web domains with FamilyActivityPicker, apply shields via ManagedSettings, and monitor usage schedules with DeviceActivity in iOS.

Access eligible Wallet financial data using FinanceKit and FinanceKitUI. Use when querying transactions or balances, reading Apple Card, Apple Cash, Savings, or U.K. connected-account data, requesting financial-data authorization, using TransactionPicker, enabling iOS 26 background delivery, or saving and checking Wallet orders.

Implement or debug keyboard, directional, and scene-level focus across SwiftUI and UIKit. Use for FocusState, focus restoration and routing, tvOS remote navigation, watchOS crown focus, visionOS input focus, macOS key loops, UIFocusGuide, or UIFocusDebugger.

Builds Game Center features with GameKit. Use for local-player authentication and restrictions, access point/dashboard, leaderboards, achievements, challenges, saved games, invitations, real-time or turn-based matchmaking, match data, and server identity verification.

Standardized Git branch creation, naming taxonomies (feat/, fix/, refactor/, hotfix/, release/, chore/), trunk-based integration, and PR isolation lifecycles. Use when creating branches, preparing pull requests, or standardizing team git workflows; do not use for resolving merge conflicts or low-level git plumbing.

Builds HealthKit authorization, sample reads/writes, statistics, background delivery, and workout sessions. Use for Apple Health metrics, charts, HKQuantitySample storage, HKLiveWorkoutBuilder, unit handling, workout recording, or health-data delivery and privacy behavior.

Control smart-home accessories and commission Matter devices using HomeKit and MatterSupport. Use when managing homes/rooms/accessories, creating action sets or triggers, reading accessory characteristics, onboarding Matter devices, or building a third-party smart-home ecosystem app.

Implement or audit accessibility for SwiftUI, UIKit, and AppKit, including VoiceOver, Dynamic Type, focus, actions, traversal, contrast, motion preferences, keyboard access, and accessibility testing. Use when accessibility behavior or compliance evidence is in scope.

Plan, build, refactor, and verify a complete iOS app or substantial end-to-end feature. Use when work spans project structure, SwiftUI implementation, persistence, testing, and Simulator delivery; do not use for a narrow framework question or isolated compiler error.

Use when capturing or analyzing ETTrace profiles for a focused iOS launch or runtime flow, including exact-build dSYM UUID matching, Simulator or device capture, processed per-thread flamegraph JSON, sampled inclusive/exclusive time, unresolved symbols, and comparable verification. Use debugging-instruments or swiftui-performance for generic profiling instead.

Implement or review Apple-platform localization with String Catalogs, generated symbols, plurals, locale-aware formatting, package resources, and right-to-left layout. Use for multi-language UI, translation keys, localized values, or localization testing.

Captures or analyzes iOS memgraph files and persistent heap growth with Apple CLI evidence, ownership paths, raw artifacts, and matched-flow verification. Use for leaks or memory-growth investigations; route interactive Xcode Memory Graph, Instruments, or LLDB work to debugging-instruments.

Builds or reviews Apple-platform networking with URLSession, async/await, and structured concurrency. Use for REST clients, uploads/downloads, WebSockets, pagination, retries, middleware, caching, background transfers, reachability, request errors, or network data loading.

Build, install, launch, inspect, and test iOS apps with Simulator and simctl. Use for simulator lifecycle, screenshots, logs, permissions, locations, push payloads, app containers, and repeatable local or CI verification.

Build or review maps and location features with MapKit and Core Location. Use for map views, annotations, overlays, user location, geocoding, place search, directions, geofencing, region monitoring, location authorization, or coordinate-based app behavior.

Use when collecting or analyzing production iOS or iPadOS performance telemetry with MetricKit, including iOS 27 MetricManager async metric or diagnostic reports, hang or crash triage, custom signposts, extended launch measurement, durable export, or iOS 26 MXMetricManager compatibility.

Integrate Apple Music catalog, playback, and personal library using MusicKit. Use when requesting MusicKit authorization, searching the catalog, playing songs/albums/playlists, checking subscription status, offering subscription sheets, or managing user playlists.

Tokenize, tag, and analyze natural language text using Apple's NaturalLanguage framework and translate between languages with the Translation framework. Use when adding language identification, sentiment analysis, named entity recognition, part-of-speech tagging, text embeddings, or in-app translation to iOS/macOS/visionOS apps.

Add drawings, shapes, and a consistent markup experience using PaperKit. Use when integrating PaperMarkupViewController for markup editing, adding shape recognition, working with PaperMarkup data models, embedding markup tools in document editors, or building annotation features that need the system-standard markup toolbar. New in iOS 26.

Integrate Apple Pay and Wallet passes with PassKit. Use for payment buttons and requests, authorization, merchant and shipping fields, pass creation or updates, Add to Wallet flows, and eligible physical-goods, service, donation, or recurring-payment checkout.

Display and manipulate PDF documents using PDFKit. Use when embedding PDFView to show PDF files, creating or modifying PDFDocument instances, adding annotations (highlights, notes, signature widgets), extracting text with PDFSelection, navigating pages, generating thumbnails, filling PDF forms, or wrapping PDFView in SwiftUI.

Implement drawing, handwriting, and sketching with PencilKit and PaperKit. Use when integrating PKCanvasView, configuring PKToolPicker, handling drawing gestures and Apple Pencil features, inspecting or rendering strokes, managing drawing data, or building drawing interfaces.

Create child communication safety experiences using PermissionKit to request parental permission for children. Use when building apps that involve child-to-contact communication, need to check communication limits, request parent/guardian approval, or handle permission responses for minors.

Builds or reviews photo-library picking, image loading, camera capture, and video recording with PhotoKit, PhotosPicker/PHPicker, and AVFoundation. Use for photo or camera permissions, media selection, capture sessions, library changes, caching, or media export.

Implement or debug local and APNs notifications, permissions, payloads, categories, actions, silent pushes, and notification extensions. Use for alerts, badges, sounds, background delivery, rich content, registration, or delivery diagnosis; route Live Activity updates to activitykit.

Preview documents, images, audio, and 3D USDZ files with QLPreviewController and SwiftUI .quickLookPreview, and generate asynchronous thumbnails using QLThumbnailGenerator in iOS apps.

Build iOS augmented reality and 3D experiences with RealityKit and ARKit. Use when adding RealityView content, loading entities or USDZ models, anchoring objects to planes or world positions, distinguishing entity hit tests from ARKit real-world raycasts, handling AR camera availability, world tracking, scene updates, or RealityKit entity gestures and interactions.

Increase widget visibility on Apple Watch using RelevanceKit. Use when providing contextual relevance signals for watchOS widgets, declaring time-based or location-based relevance, combining multiple relevance providers, helping the system surface the right widget at the right time on watchOS 26, or routing mixed RelevanceKit/WidgetKit/HealthKit/MapKit Smart Stack scope.

Maintains existing SceneKit scenes, nodes, materials, cameras, lights, animation, physics, particles, assets, shaders, and SwiftUI hosting. Use for SceneKit maintenance; route new 3D apps, major redesigns, USD/USDZ pipelines, and migration planning to RealityKit.

Access ambient, motion, biometric, and interaction research data using SensorKit. Use when configuring sensor readers, handling authorization and study onboarding, fetching sample streams, managing user data deletion, or building research and clinical studies.

Build shared real-time experiences using GroupActivities and SharePlay. Use when implementing shared media playback, collaborative app features, synchronized game state, or any FaceTime, Messages, AirDrop, or nearby visionOS group activity on iOS, macOS, tvOS, or visionOS.

Recognize music and audio with ShazamKit using SHManagedSession, SHSession, SHCustomCatalog, and SHSignatureGenerator for live microphone matching and custom audio catalogs in iOS apps.

Transcribe live and recorded audio with the Speech framework. Use when implementing SpeechAnalyzer (iOS 26+), SpeechTranscriber, SFSpeechRecognizer, live microphone speech-to-text, audio file transcription, on-device speech models, speech recognition permissions, or custom language models.

Build 2D games and animations using SpriteKit. Use when creating game scenes with SKScene and SKView, adding sprites with SKSpriteNode, animating with SKAction sequences, simulating physics with SKPhysicsBody and contact detection, creating particle effects with SKEmitterNode, building tile maps, using SKCameraNode, or integrating SpriteKit scenes in SwiftUI with SpriteView.

Implement or review in-app purchases and subscriptions with StoreKit 2, including paywalls, transactions, entitlement verification, offers, renewal state, testing, Family Sharing, Ask to Buy, refunds, and billing recovery. Route physical-goods checkout to passkit.

Apply Swift API Design Guidelines to names, argument labels, mutating/nonmutating pairs, protocols, and documentation comments. Use when designing or reviewing Swift APIs for clarity at the call site; file and project organization belongs to the relevant architecture/UI skill.

Choose, review, or migrate Apple-platform architecture and module boundaries. Use when feature complexity may justify MVVM, MVI, TCA, Clean Architecture, a Coordinator, or an incremental migration beyond straightforward SwiftUI MV.

Builds or reviews Swift Charts visualizations, including bar, line, area, point, sector, vectorized, and 3D charts. Use for marks, axes, scales, legends, annotations, selection, scrolling, styling, accessibility, large datasets, plots, or spatial surfaces.

Master serialization and deserialization in Swift with Codable. Use when implementing custom CodingKeys, date/data decoding strategies, polymorphic/mixed collections, lossy array decoding, property wrappers for default values, or bridging Codable with SwiftData/CoreData persistence.

Reviews Swift and SwiftUI pull requests, diffs, and changed code for evidence-backed correctness, concurrency, ownership, errors, Observation state, and lifecycle risks. Use when the requested deliverable is a code review, then route deep fixes to specialist skills.

Diagnoses and implements data-race-safe Swift concurrency with actor isolation, Sendable, structured tasks, cancellation, and synchronization. Use for compiler diagnostics or async behavior; when the requested deliverable is a PR or diff review, select swift-code-review first.

Implement or review SwiftData models, containers, queries, relationships, migrations, CloudKit configuration, and background persistence work. Use for SwiftData-backed storage; route legacy Core Data-only work to core-data.

Formats and parses locale-aware numbers, decimals, currencies, percentages, dates, durations, measurements, names, lists, byte counts, and URLs with Foundation FormatStyle and ParseableFormatStyle. Use when replacing legacy Formatter subclasses, designing reusable format APIs, using SwiftUI Text(_:format:), correcting availability, or testing user-facing formatted output across locales.

Apply modern Swift language patterns to non-SwiftUI, non-concurrency code, including expressions, typed throws, generics, protocols, result builders, property wrappers, opaque and existential types, regexes, and collections. Route concurrency, Codable, formatting, and API naming to their specialist skills.

Configure and enforce SwiftLint through build-tool plugins, Xcode scripts, Swift Package plugins, or CI. Use for rule configuration, suppressions, baselines, autocorrection, reporters, strictness, multi-config setups, and staged rollout in existing Swift projects.

Builds or reviews Apple-platform security with Keychain, LocalAuthentication, CryptoKit, Secure Enclave, certificate pinning, key sharing, and secure credential migration. Use for secrets, biometrics, cryptography, trust evaluation, or OWASP MASVS/MASTG mobile controls.

Write, review, or migrate Swift unit tests using Swift Testing, while preserving XCTest/XCUITest where their APIs are still required. Use for test design, async behavior, traits, parameterization, migration boundaries, and version-gated testing APIs.

Implement or diagnose SwiftUI motion, including state animations, transitions, springs, keyframes, matched geometry, navigation zoom, and symbol effects. Use when motion behavior is part of the request; route layout, navigation state, and performance profiling elsewhere.

Builds or reviews SwiftUI tap, press, drag, magnify, and rotate interactions, including gesture composition, transient GestureState, custom gestures, and parent/child conflict resolution. Use for gesture recognition, arbitration, state, migration, or interaction bugs.

Build SwiftUI stacks, grids, lists, scroll views, forms, controls, search interfaces, and overlays. Use for ordinary layout and container decisions; route cross-size adaptation, clipping or overlap diagnosis, state architecture, navigation policy, animation choreography, and runtime profiling to dedicated skills.

Implement or review SwiftUI Liquid Glass for iOS 26+, including glass effects and containers, controls, toolbars, tab bars, morphing transitions, tinting, scroll edges, background extension, and availability fallbacks. Use when adopting the Liquid Glass visual system.

Implement SwiftUI navigation patterns including NavigationStack, NavigationSplitView, sheet presentation, tab-based navigation, and deep linking. Use when building push navigation, programmatic routing, multi-column layouts, modal sheets, tab bars, universal links, or custom URL scheme handling.

Structure and refactor SwiftUI views using Observation, clear state ownership, composition, and deterministic previews. Use for view architecture and data flow; route detailed layout, navigation, animation, performance, and visual effects to their dedicated skills.

Profiles and fixes SwiftUI runtime performance with code review, Instruments, and repeatable measurement. Use for slow rendering, scrolling or animation hitches, excessive body updates, identity churn, layout spikes, broad Observation invalidation, CPU cost, or before/after verification.

Diagnose and implement adaptive SwiftUI layouts across iPhone and iPad window sizes, orientation, Dynamic Type, localization, safe areas, keyboard, and multitasking. Use when views clip, overlap, truncate, move off-screen, or depend on brittle fixed frames; route ordinary container selection to swiftui-layout-components and measured runtime profiling to swiftui-performance.

Bridges UIKit and SwiftUI with representables, hosting controllers/configurations, coordinators, and shared observable state. Use for wrapping UIKit or third-party views/controllers, embedding SwiftUI in UIKit, system controller surfaces, or incremental UIKit-to-SwiftUI migration.

Embeds and controls web content in SwiftUI with WebKit for SwiftUI, including WebView, WebPage, navigation policies, JavaScript execution, observable page state, link interception, local HTML or data loading, and custom URL schemes. Use when building iOS 26+ article/detail views, help centers, in-app documentation, or other embedded web experiences backed by HTML, CSS, and JavaScript.

Builds multiplayer spatial board games with TabletopKit on visionOS. Use for tables, seats, equipment, turns, TabletopAction state changes, interactions, snapping/tossing/physics, RealityKit rendering, deterministic game state, or Group Activities synchronization.

Implement and review Apple TipKit feature-discovery UI for iOS 17+ apps. Use when adding or auditing in-app tips, contextual help, coach marks, Tip, TipView, popoverTip, rules, events, actions, display frequency, testing overrides, reusable tip identifiers, or iOS 18+ TipGroup and CloudKit tip sync; avoid for generic SwiftUI navigation or layout outside tip presentation.

Builds or reviews iOS computer-vision features with Vision and VisionKit, including OCR, barcode and document scanning, face/object detection, segmentation, tracking, and Core ML inference. Use for Vision requests, live DataScanner flows, or Vision/Core ML integration.

Fetch WeatherKit current, minute, hourly, and daily forecasts; weather alerts; iOS 18+ changes, historical comparisons, summaries, and statistics; and required Apple Weather attribution. Use when integrating weather data, showing forecasts or alerts, caching WeatherKit responses, displaying attribution, or reviewing WeatherKit query limits in iOS apps.

Builds or reviews WidgetKit widgets and controls for Home Screen, Lock Screen, StandBy, CarPlay, and Control Center. Use for timelines, App Intent configuration, interactive controls, push reloads, refresh budgets, deep links, Smart Stack relevance, rendering, extensions, and App Groups.