<!--
{
  "availability" : [
    "iOS: 13.0.0 -",
    "iPadOS: 13.0.0 -",
    "macCatalyst: 13.0.0 -",
    "macOS: 13.0.0 -",
    "swift: -",
    "visionOS: 1.0.0 -",
    "watchOS: 6.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "HealthKit",
  "identifier" : "/documentation/HealthKit/HKHeartbeatSeriesBuilder/init(healthStore:device:startDate:)",
  "metadataVersion" : "0.1.0",
  "role" : "Initializer",
  "symbol" : {
    "kind" : "Initializer",
    "modules" : [
      "HealthKit"
    ],
    "preciseIdentifier" : "c:objc(cs)HKHeartbeatSeriesBuilder(im)initWithHealthStore:device:startDate:::SYNTHESIZED::c:objc(cs)HKHeartbeatSeriesBuilder"
  },
  "title" : "init(healthStore:device:startDate:)"
}
-->

# init(healthStore:device:startDate:)

```
init(healthStore: HKHealthStore, device: HKDevice?, startDate: Date)
```

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)