Metadata Keys
Constants used to add metadata to objects stored in HealthKit.
Overview
Use these keys to facilitate sharing data between apps. You can also create your own custom keys to give HealthKit objects additional app-specific data.
Topics
General Keys
HKMetadataKeyExternalUUIDHKMetadataKeyTimeZoneHKMetadataKeyWasUserEnteredHKMetadataKeyQuantityClampedToLowerBoundHKMetadataKeyQuantityClampedToUpperBound
Estimate Keys
Device Information Keys
HKMetadataKeyDeviceSerialNumberHKMetadataKeyUDIDeviceIdentifierHKMetadataKeyUDIProductionIdentifierHKMetadataKeyDigitalSignatureHKMetadataKeyDeviceNameHKMetadataKeyDeviceManufacturerNameHKMetadataKeyDevicePlacementSideHKDevicePlacementSideHKMetadataKeyAppleDeviceCalibrated
Sync Keys
Lab Keys
HKMetadataKeyWasTakenInLabHKMetadataKeyReferenceRangeLowerLimitHKMetadataKeyReferenceRangeUpperLimit
Weather Keys
HKMetadataKeyBarometricPressureHKMetadataKeyWeatherConditionHKMetadataKeyWeatherHumidityHKMetadataKeyWeatherTemperature
Workout Keys
Cardio Fitness Keys
Motion Keys
Nutrition Keys
Vitals Sensors Keys
HKMetadataKeyBodyTemperatureSensorLocationHKMetadataKeyHeartRateSensorLocationHKMetadataKeyHeartRateMotionContextHKPredicateKeyPathAverageHeartRateHKMetadataKeyHeartRateRecoveryActivityDurationHKMetadataKeyHeartRateRecoveryActivityTypeHKMetadataKeyHeartRateRecoveryMaxObservedRecoveryHeartRateHKMetadataKeyHeartRateRecoveryTestTypeHKMetadataKeyVO2MaxTestType