HealthKit

Access, query, and store health and fitness metrics in Apple Health using HealthKit. Covers authorization, quantity samples, statistics collection queries, background delivery, and workout sessions. Targets Swift 6.3 / iOS 26+.

Contents

• Capabilities and Privacy
• Availability and HKHealthStore
• Query Selection Matrix
• Writing Samples and Units
• Route by Task
• Common Mistakes
• Review Checklist
• References

Capabilities and Privacy

Enable HealthKit in Signing & Capabilities. If your app observes updates in the background, enable the Background Delivery checkbox.