HealthKit and WorkoutKit

You MUST use this skill for ANY HealthKit or WorkoutKit development including authorization, data queries, background delivery, workout sessions, planned workouts, wellbeing APIs (State of Mind), Medications, and Health Records.

Quick Reference

Symptom / Task	Reference
HealthKit framework model, HKHealthStore, data types, sample vs characteristic data	See skills/fundamentals.md
Capability setup, requestAuthorization, purpose strings, read-asymmetry, privacy	See skills/authorization-and-privacy.md
HKSampleQuery, Swift Concurrency query APIs, HKStatisticsCollectionQuery, sample writes	See skills/queries.md
Anchored queries, observer queries, HKDeletedObject, background-delivery entitlement	See skills/sync-and-background.md
HKWorkoutSession, HKLiveWorkoutBuilder, recovery, multi-device, iOS/iPadOS/watchOS workout tracking	See skills/workouts.md
Workout zones (heart-rate/power effort bands), live + retrospective OS27	See skills/workouts.md
WorkoutKit custom/planned workouts, scheduling, swimming workouts, previewing	See skills/workoutkit.md
State of Mind, Medications API, symptom logging, menopausal state, wellbeing APIs OS27	See skills/wellbeing-and-medications.md
Health Records (FHIR), Mobility Health App, motion-based health	See skills/clinical-and-mobility.md

Cross-Suite Routes

These topics overlap with HealthKit/WorkoutKit but live in separate suites:

watchOS presentation

• Watch-specific workout presentation (Always On, Smart Stack), complication surfaces → See axiom-watchos
• Workout app structure on Apple Watch → See axiom-watchos (skills/platform-basics.md)

Concurrency

• Swift 6 concurrency, actors, Sendable → See axiom-concurrency
• HealthKit queries bridging to Swift Concurrency → skills/queries.md is the canonical example