---
title: HKMetadataKeyAppleFitnessPlusCatalogIdentifier
framework: healthkit
role: symbol
role_heading: Global Variable
path: healthkit/hkmetadatakeyapplefitnesspluscatalogidentifier
---

# HKMetadataKeyAppleFitnessPlusCatalogIdentifier

## Declaration

```swift
let HKMetadataKeyAppleFitnessPlusCatalogIdentifier: String
```

## Discussion

Discussion Contains the catalog identifier of the Fitness+ workout. This key only exists if the workout was completed in Fitness+. The expected value type is an NSString containing the Fitness+ catalog identifier.

## See Also

### Constants

- [HKDataTypeIdentifierStateOfMind](healthkit/hkdatatypeidentifierstateofmind.md)
- [HKMetadataKeyMaximumLightIntensity](healthkit/hkmetadatakeymaximumlightintensity.md)
- [HKPredicateKeyPathWorkoutEffortRelationship](healthkit/hkpredicatekeypathworkouteffortrelationship.md)