I'm using Healthkit with the following H/W specs: Apple Watch, series 8, OS: 10.6.1 (21U580) iPhone 11 Pro, OS: 17.6.1 Mac Studio M1 Xcode ver: 16.0 (16A242d) I am trying to get Apple Watch to report heart rate, HRV, respiratory rate, and body temperature using Healthkit's HKLiveWorkoutBuilder implementing HKLiveWorkoutBuilderDelegate's workoutBuilder method. However, the only reported value that is found from the workoutBuilder method's collectedTypes (a Set of HKSampleType objects) is HKQuantityTypeIdentifierHeartRate. Nothing for HRV, respiratory rate, or body temperature. All entitlements are set up, the plist filled in, and capabilities in place. Not sure why only the heart rate is reported from the watch but nothing else. I've scoured StackOverflow, Apple developer forums, even ChatGPT but none of the solutions work. Any help most appreciate! The model code is: import Foundation import HealthKit class WatchModel: NSObject, HKLiveWorkoutBuilderDelegate, HKWorkoutSessionDelegate { private let healthStore = HKHealthStore() private var workoutSession: HKWorkoutSession! private var workoutBuilder: HKLiveWorkoutBuilder! override init() { super.init() requestAuthorization() startWorkoutSession() } private func requestAuthorization() { let heartRateType = HKQuantityType.quantityType(forIdentifier: .heartRate)! let respiratoryRateType = HKQuantityType.quantityType(forIdentifier: .respiratoryRate)! let HRVRateType = HKQuantityType.quantityType(forIdentifier: .heartRateVariabilitySDNN)! let temperatureRateType = HKQuantityType.quantityType(forIdentifier: .bodyTemperature)! let healthDataTypes: Set = [heartRateType, respiratoryRateType, HRVRateType, temperatureRateType] healthStore.requestAuthorization(toShare: healthDataTypes, read: healthDataTypes) { (success, error) in if !success { print("Authorization failed") } } } func workoutSession(_ workoutSession: HKWorkoutSession, didChangeTo toState: HKWorkoutSessionState, from fromState: HKWorkoutSessionState, date: Date) { } func workoutSession(_ workoutSession: HKWorkoutSession, didFailWithError error: any Error) { } func workoutBuilderDidCollectEvent(_ workoutBuilder: HKLiveWorkoutBuilder) { } func startWorkoutSession() { let configuration = HKWorkoutConfiguration() configuration.activityType = .other configuration.locationType = .indoor do { workoutSession = try HKWorkoutSession(healthStore: healthStore, configuration: configuration) workoutBuilder = workoutSession.associatedWorkoutBuilder() workoutBuilder.delegate = self workoutBuilder.dataSource = HKLiveWorkoutDataSource(healthStore: healthStore, workoutConfiguration: configuration) let dataSource = HKLiveWorkoutDataSource(healthStore: healthStore, workoutConfiguration: configuration) let respiratoryRate = HKQuantityType(.respiratoryRate) dataSource.enableCollection(for: respiratoryRate, predicate: nil) let bodyTemp = HKQuantityType(.bodyTemperature) dataSource.enableCollection(for: bodyTemp, predicate: nil) let hrv = HKQuantityType(.heartRateVariabilitySDNN) dataSource.enableCollection(for: hrv, predicate: nil) workoutSession.delegate = self workoutSession.startActivity(with: Date()) workoutBuilder.beginCollection(withStart: Date(), completion: { (success, error) in if let error = error { print("Error starting collection: \(error.localizedDescription)") } }) } catch { print("Failed to start workout session: \(error.localizedDescription)") } } func workoutBuilder(_ workoutBuilder: HKLiveWorkoutBuilder, didCollectDataOf collectedTypes: Set<HKSampleType>) { print("collected types: \(collectedTypes)") for type in collectedTypes { if let quantityType = type as? HKQuantityType { if quantityType == HKQuantityType.quantityType(forIdentifier: .heartRate) { if let heartRateQuantity = workoutBuilder.statistics(for: quantityType)?.mostRecentQuantity() { let heartRateUnit = HKUnit(from: "count/min") let heartRateValue = heartRateQuantity.doubleValue(for: heartRateUnit) print("heart rate: \(heartRateValue)") } } if quantityType == HKQuantityType.quantityType(forIdentifier: .heartRateVariabilitySDNN) { if let hrvQuantity = workoutBuilder.statistics(for: quantityType)?.mostRecentQuantity() { let hrvUnit = HKUnit.secondUnit(with: .milli) let hrvValue = hrvQuantity.doubleValue(for: hrvUnit) print("HRV: \(hrvValue)") } } if quantityType == HKQuantityType.quantityType(forIdentifier: .bodyTemperature) { if let bodyTempQuantity = workoutBuilder.statistics(for: quantityType)?.mostRecentQuantity() { let tempUnit = HKUnit.degreeCelsius() let tempValue = bodyTempQuantity.doubleValue(for: tempUnit) print("body temp: \(tempValue)") } } if quantityType == HKQuantityType.quantityType(forIdentifier: .respiratoryRate) { if let respRateQuantity = workoutBuilder.statistics(for: quantityType)?.mostRecentQuantity() { let respRateUnit = HKUnit(from: "count/min") let respRateValue = respRateQuantity.doubleValue(for: respRateUnit) print("breathing: \(respRateValue)") } } } } } }

Hello all, I am quite new to iOS and Swift, and before venturing further, I feel it's better to ask for advice. I have build a Type I diabetes simulator running as a NodeJS application on a server. The clients authenticate via a browser using Fitbit/Google oauth2, set up a virtual patient, then take care of the patient 24/7. The app imports the users steps and heartrate, as these influence the blood sugar variations. (https://cgmsim.com) I designed a companion app with Expo, adding high/log blood glucose alerts with push notifications. If the user doesn't have a Fitbit tracker or doesn't use Google Fit, I'd like to send their HealthKit step counts to the backend. (Using sensor data directly in Android). It works using Expo's Background Fetch and TaskManager, but the uploads from the iOS device are very irregular. I set up silent push notifications from the backend to wake up the app in the background and trigger the step count upload. It works, but it is not reliable enough. I now wrote my first local native module for iOS, where a HKObserverQuery listening for new step events, making the upload and sending the count to the JS for rendering. I used enableBackgroundDelivery and BackgroundTask for uploading the results. All the entitlements and Info.plist entries should be ok. Still my app works well only in the foreground, and not upload at all happens when in the background. As we all do, I asked Claude, and it assured me th app should work. I have doubts though, as I noticed how strict iOS is about executing background tasks. So... should I even expect this to work ?

I'm trying to hook into the new workoutEffort score supported in iOS 18, I am collecting this information from users when they submit their workout and trying to add a sample to the HKWorkout in the same manner as I've been adding other samples like bodyweight, calories burned, etc. I'm receiving the error: HKWorkout: Sample of type HKQuantityTypeIdentifierWorkoutEffortScore must be related to a workout I tried adding the samples using HKWorkoutBuilder.add([samples]) as which has been working perfectly for calories burned & bodyweight, but I am receiving the above error for workoutEffortScore As a second approach, I tried adding the sample after I called finishWorkout on the HKWorkoutBuilder and received back the HKWorkout object using HKHealthStore.add([samples], to: HKWorkout) and am still receiving the same error! I don't know otherwise how to relate a sample to a workout, I thought those were the APIs to do so? I'm using Xcode 16.0 RC (16A242) and testing on an iOS 16 Pro simulator

Hello, We're encountering overlapping segments and discrepancies when analyzing running/workout data for a 5-mile run. The expected splits for the run are: 8:39 9:06 8:30 8:39 8:43 0:08 However, the raw data includes segments where start times begin before the previous segment ends, and there are duplicate start times. Below is a sample of the raw data: "startDate": "2024-09-09T19:32:00.308-0400", "eventType": "segment", "eventTypeInt": 7, "endDate": "2024-09-09T19:37:56.135-0400" }, { "startDate": "2024-09-09T19:32:00.308-0400", "eventType": "segment", "eventTypeInt": 7, "endDate": "2024-09-09T19:41:08.476-0400" },``` // Here's an example of where the second segment start time falls in side the first segments startDate and endDate "startDate": "2024-09-09T19:54:22.658-0400", "eventType": "segment", "eventTypeInt": 7, "endDate": "2024-09-09T19:59:41.215-0400" }, { "startDate": "2024-09-09T19:58:44.624-0400", "eventType": "segment", "eventTypeInt": 7, "endDate": "2024-09-09T20:07:23.216-0400"

I noticed last night that workouts I have been recording on my main carry device running 17.6.x have not been syncing to my beta devices running iOS 18 RC, iPadOS 18 RC and watchOS 11 RC. All devices are using the same Apple Account and I have iCloud enabled for Health data. The iPad running the RC has the syncing enabled in Profile. Is anyone else experiencing health data not propagating to the 18.x devices? Some of data exists on all devices but not all. For good measure I left the device unlocked on the health app last night for a long period of time to let it do its thing. This morning the data still hadn't propagated. I disabled and reenabled the synchronization on my iPad having chosen to delete all samples when disabling it. Hopefully all of my data dating back to the first Apple Watch in 2014 restores. FWIW my data set according to iCloud settings my health dataset is just shy of 650 MB. FB15102443 - Health / HealthKit: Workouts, activity rings, sample data, and more not syncing via iCloud to 18 RC device

Hello HealthKit Experts & Enthusiasts! I am building an app called one sec which forces people to take a deep breath before they can use social media apps (it’s using Shortcuts Automations for that). One important feature of one sec is the Good Morning Countdown: For a specified time after waking up (e.g. 30mins) selected apps are blocked completely. This helps to start the day screen-free. They way it works is, the user grants access to read HKCategoryTypeIdentifier.sleepAnalysis data. I have implemented a HKObserverQuery and enableBackgroundDelivery in order to be informed whenever new HKCategoryTypeIdentifier.sleepAnalysis becomes available. I noticed that when I have my device connected to Xcode, this works as expected. However, when I quit the app and launch it from my Home Screen, my observer query is not informed about new sleep data (except when my app is running in foreground). Any ideas? Furthermore, I have noticed that sometimes sleep data is provided delayed to HealthKit, many minutes (sometimes even longer) after waking up, no sleep samples are to be found in the Health app. Of course, for my app it is crucial to get accurate + timely so apps can be blocked accordingly. Is this an issue that the Apple Watch first needs to send the samples to the phone? Thanks a lot for your help!

Good evening, when I use the automatic export feature from my iPhone, it successfully exports data. When reading the Export.xml file it is dispayed completely, with about 3 mio lines. When I check the file I see, that a lot of data is missing. E.g. the iPhone dispays the heart rates for several exercises (from last year), which don't have any correspondence in the export.xml file. Current exercises have. I am a developer myself and parsed all files without any error. My iPhone has enough free space (200GB or so) and iCloud has more than a TB free. Internet is connected via 1GBit line, WLAN with 800MBit and everything runs smooth. I would like to get a COMPLETE export of all the health data, without having to write a program on my own to accomplish this. Thank you. /C

Finally at last Apple Health supports saving .distancePaddleSports, .distanceCrossCountrySkiing, .distanceRowing, .distanceSkatingSports, and much more. The backstory. In the land of 10,000 lakes, there hasn't been a way to save 'canoe' or 'kayak' distance and I've been asking for it for years. Thank you health team for adding it this year! FB7807993 - Add HKQuantityTypeIdentifier.paddleDistance for canoeing, kayaking, etc type workouts (June 2020) Prior we could just save the totalDistance to a workout, but since the HKWorkout initializers were deprecated we no longer have a supported way to save these distances in our workouts. The iOS 18 / watchOS 11 introduction addresses this. If you want to know more why you can't do this in earlier versions you can check these feedback titles: FB10281482 - HealthKit: Deprecation of totalDistance on a workout session of paddleSports breaks apps that used that to save distance to the workout because there is no "paddleDistance" type available to save as sample data (June 2022) FB12402974 - HealthKit: Deprecation of HKWorkout completely breaks support for third party fitness apps from saving non-standard workout distance (June 2023) Great, so there is new support that solves all of these requests and issues for the new version of the OSes. However, the downside is now that there is not much for documentation. Unlike the .runningSpeed and .runningPower introduced in iOS 16 / watchOS 9, none of the new iOS 18 / watchOS 11 types have documentation, at all. To some degree this is understandable, but types from last year still remain undocumented too. Without this information for the data types introduced in both iOS 17/18 and watchOS 10/11 it makes building and integrating with these new types difficult to say the least. We can't make assumptions about anything. Can we get a documentation update for new (and existing) quantity types for when Apple Watch will automatically generate samples? FB14236080 - Developer Documentation / HealthKit: Update documentation for HKLiveWorkoutDataSource typesToCollect for which sample types are automatically collected by watchOS 10 and 11 (July 2024) FB14942555 - HealthKit / Documentation: App Update Release Issue - HKQuantityTypeIdentifiers are missing documentation describing when the system automatically adds data (today) I know that the behavior has changed from release to release for some of these types, so documentation would be based on OS version. If you didn't catch it, watchOS 11 will now associate .cyclingSpeed for cycling workouts both indoor and outdoor. FB12458548 - Fitness: Connected cycling speed sensor did not save samples to health via cycling workout (June 2023 - received reply that only saved for indoor cycling, but not documented otherwise) FB14311218 - HealthKit: Expected outdoor cycling to include .cyclingSpeed quantity type as a default HKLiveWorkoutDataSource type to collect (July 2024) To the other third party fitness apps out there, how are you managing the knowledge of which devices collect which data types on which versions of the OS? Sure, we could look at the HKLiveWorkoutDatSource and inspect the typesToCollect property across a bunch of devices, but again that is trial by error not 'as documented'. Is the behavior of simulators guaranteed to match the behavior of real devices? Maybe, but also maybe not. Fingers crossed for a nice documentation update to spell out all of the behavioral details. Apple folks / DTS, many of the above feedbacks are addressed and I plan to update or close them after the releases this fall. Some are still outstanding. P.S. I hope that .paddleSports gets deprecated and split into individual activity types like skiing did years ago. Their MET scores are different according to the research on the physical activity compendium site. FB7807902 - Split HKWorkoutActivityType.paddleSports into their own activity types (June 2020)

I’m trying to use BGProcessingTaskRequest to fetch step data in the background and send it. However, when I combine BGProcessingTaskRequest, HKObserverQuery, and healthStore.enableBackgroundDelivery, the results sometimes return zero. When I don’t schedule the BGProcessingTaskRequest, the data retrieved using HKObserverQuery and HKSampleQueryDescriptor is correct. // Register Smart Walking Sync Task func registerSmartWalkingSync() { #if !targetEnvironment(simulator) BGTaskScheduler.shared.register(forTaskWithIdentifier: BGTaskIdentifier.smartwalking.rawValue, using: nil) { task in guard let task = task as? BGProcessingTask else { return } self.handleSmartWalkingSync(task: task) } #endif } func scheduleSmartWalkingSync(in seconds: TimeInterval? = nil, at date: Date? = nil) { let newRequest = BGProcessingTaskRequest(identifier: BGTaskIdentifier.smartwalking.rawValue) newRequest.requiresNetworkConnectivity = true newRequest.requiresExternalPower = false if let seconds = seconds { newRequest.earliestBeginDate = Date().addingTimeInterval(seconds) } else if let date = date { newRequest.earliestBeginDate = date } do { try BGTaskScheduler.shared.submit(newRequest) debugPrint("✅ [BGTasksManager] scheduled for Smart Walking Sync") } catch { FirebaseConnection.shared.recordException(error) debugPrint("❌ [BGTasksManager] error: \(error)") } } // Handle Smart Walking Sync Task func handleSmartWalkingSync(task: BGProcessingTask) { debugPrint("🔄 [BGTasksManager] sync \(task.identifier) sync started") scheduleSmartWalkingSync(in: SYNC_SMARTWALKING_TIME_INTERVAL) let queue = OperationQueue() let operation = HealthActivitiesOperation() operation.completionBlock = { Task { do { try await operation.sync() task.setTaskCompleted(success: !operation.isCancelled) debugPrint("✅ [BGTasksManager] sync \(task.identifier) completed successfully") } catch { FirebaseConnection.shared.recordException(error) task.setTaskCompleted(success: false) debugPrint("❌ [BGTasksManager] sync \(task.identifier) error: \(error)") } } } task.expirationHandler = { operation.cancel() } queue.addOperation(operation) } // MARK: - HealthKit Background Delivery internal func enableBackgroundDeliveryForAllTypes() async throws { for type in allTypes.filter({ type in type != HKQuantityType(.heartRate) }) { try await healthStore.enableBackgroundDelivery(for: type, frequency: .daily) } debugPrint("✅ [HealthKitManager] Enable Background Delivery") } internal func observeHealthKitQuery(predicate: NSPredicate?) async throws -> Set<HKSampleType> { let queryDescriptors: [HKQueryDescriptor] = allTypes .map { type in HKQueryDescriptor(sampleType: type, predicate: predicate) } return try await withCheckedThrowingContinuation { continuation in var hasResumed = false let query = HKObserverQuery(queryDescriptors: queryDescriptors) { query, updatedSampleTypes, completionHandler, error in if hasResumed { return } if let error = error { continuation.resume(throwing: error) } else { continuation.resume(returning: updatedSampleTypes ?? []) } hasResumed = true completionHandler() } healthStore.execute(query) } } internal func getHealthActivity(by date: Date, predicate: NSCompoundPredicate, sampleTypes: Set<HKSampleType>) async throws -> HealthActivityData { var data = HealthActivityData(steps: 0, calories: 0, distance: 0.0, distanceCycling: 0.0, totalDuration: 0, date: date, heartRate: nil) for sampleType in sampleTypes { guard let quantityType = sampleType as? HKQuantityType else { continue } switch quantityType { case HKQuantityType(.stepCount): let stepCount = try await getDescriptor( date: date, type: quantityType ).result(for: healthStore) .statistics(for: date)?.sumQuantity()?.doubleValue(for: HKUnit.count()) data.steps = stepCount ?? 0.0 // Calculate total duration using HKSampleQueryDescriptor let totalDurationDescriptor = HKSampleQueryDescriptor( predicates: [.quantitySample(type: quantityType, predicate: predicate)], sortDescriptors: [SortDescriptor(\.endDate, order: .reverse)] ) let stepSamples = try await totalDurationDescriptor.result(for: healthStore) data.totalDuration += stepSamples .reduce(0) { $0 + $1.endDate.timeIntervalSince($1.startDate) } / 60.0 default: debugPrint("Unknown quantity type") } } return data }

Heya, I'm currently building out my own application for tracking my health information, and I'm hoping to collect my historical data from Apple Health. Sadly, it would appear that certain things I wish to export don't appear in the export.xml file. Some of the things that I would expect to find in the export.xml file, that do not currently appear, are as follows: More data about my medications, currently I can only export a list of my medications, its not possible to export data such as when what medication was taken. Logged emotions; there is currently no support for this (that I can find). Would appreciate some insight into this.

Like my post title? I'm having issues getting my app accepted by the app store. I keep getting the message: Guideline 2.5.1 - Performance - Software Requirements Your app's binary includes references to HealthKit components, but the app does not appear to include any primary features that require health or fitness data. I don't have healthkit implemented anywhere in my app. I sifted through my app and: Healthkit is not implemented in my infoplist There are no HK imports My app doesn't reveal any references to "Health Kit" when I do a project wide search. The only thing I can think of is that there's an issue with my use of firebase. I'm wondering if I somehow inserted healthkit functionality in to firebase accidentally. Has anyone else had this problem before? If so, how did you solve it? Also. How do you rid of healthkit functionality or references to healthkit within firebase?

Hi! I've added the code of the multidevice workout app from Apple to my app and I found some issues that I cannot see on the sample app. In my app, to pause or end the workout from the watch, the iOS companion app has to be opened or at least on background, but never closed. What I'm doing wrong?

Hi All, I am posting this to get some help on fetching Water intake data from Health Kit. I have done (following a similar approach, and perfectly working) the fetch of the user weight, but for the water, somehow, I always receive back 0 samples. I went to the Health App, added few entries (in different days) for the water intake, under the food sections. Then, I use the following snippet to read the values, but I always have 0 values back. What I am doing wrong? let type = HKQuantityType(.dietaryWater) let samplePredicate = HKSamplePredicate.sample(type: type, predicate: nil) // Create the descriptor. let descriptor = HKSampleQueryDescriptor( predicates: [samplePredicate], sortDescriptors: [SortDescriptor(\.endDate, order: .reverse)]) let results = try await descriptor.result(for: hkHealthStore) The results variable is always 0 elements. What I am doing wrong? PS: The permissions are checked and correctly given for this: HKQuantityType(.dietaryWater)

My iOS app has a correctly configured HealthKit integration. It successfully delivers all samples and data to HealthKit. For every workout sent to HealthKit, I can see the duration, workout name, calories, and other details. However, the app icon is missing. My project uses the Single Size setting for the app icon in the XCAssets folder. The app is available in the App Store in some regions. What can I do to fix this issue? The problem persists regardless of whether the device is running iOS 17 or 18.

In my app im able to get the live heart rate when app is in foreground. When app is in background/ locked condition live heart rate is not fetched. How to get live heart rate frequently.

Hi everyone, I have a question regarding the integration of Apple Watch and Vision Pro. Is it possible to connect an Apple Watch to Vision Pro to access health data and display it within Vision Pro applications? If so, could you provide some guidance or point me towards relevant resources or APIs that would help in achieving this? Thank you in advance for your assistance!

I have integrated HealthKit into my app to track and display step data. On my iPhone, the step data syncs and shows up immediately. However, when I try to fetch and display this data on my Vision Pro app, there's a noticeable delay before the data appears, even though I've given the necessary permissions and synced data through iCloud. Memory updated Here is your question in a similar format: Hi everyone, I'm developing a visionOS app using SwiftUI and RealityKit. I'm facing a challenge with fetching step data from HealthKit. Scenario: I have integrated HealthKit into my app to track and display step data. On my iPhone, the step data syncs and shows up immediately. However, when I try to fetch and display this data on my Vision Pro app, there's a noticeable delay before the data appears, even though I've given the necessary permissions and synced data through iCloud. Question: Why is there a delay in fetching step data from HealthKit on my Vision Pro app, and how can I reduce this delay to ensure real-time data display? Additional Information: I'm using HKStatisticsQuery to fetch the step data for the current day. The authorization for HealthKit is requested successfully. The data shows up after some time, but the initial delay is causing a poor user experience. Here is the relevant code snippet for fetching today's steps: class HealthManager: ObservableObject { let healthStore = HKHealthStore() @Published var activities: [String: Activity] = [:] init() { let steps = HKQuantityType(.stepCount) let healthTypes: Set = [steps] Task { do { try await healthStore.requestAuthorization(toShare: [], read: healthTypes) } catch { print("error fetching health data") } } } func fetchTodaySteps() { let steps = HKQuantityType(.stepCount) let predicate = HKQuery.predicateForSamples(withStart: .startOfDay, end: Date()) let query = HKStatisticsQuery(quantityType: steps, quantitySamplePredicate: predicate) { _, result, error in guard let quantity = result?.sumQuantity(), error == nil else { print("error fetching today's step data") return } let stepCount = quantity.doubleValue(for: .count()) print("stepCount \(stepCount)") } healthStore.execute(query) } } I'm open to alternative approaches if this method isn't the most efficient for real-time data fetching. Thanks in advance for any insights or suggestions! Best, Siddharth

Are there any limitations on how long iOS will continue delivering background updates from HealthKit to the app? Will deliveries be suspended if the user stops opening the app for a few days, a month, or longer?

I am working on my final year project, a mobile workout app using Flutter, and I want to integrate HealthKit for data collection and display. Do I need a paid Apple Developer Program membership to use HealthKit and showcase my app on a physical iPhone for my final presentation? I found information suggesting a free developer account might suffice but mentioned a 7-day app expiration and potential data loss upon rebuilding. Can someone clarify the validity and limitations of using a free developer account for this purpose?

Hello, I am trying to build a features where I want to monitor a user's biking workout session metrics like the current speed, average speed and distance travelled. I want to get these metrics as the user is actively doing a workout session in the Workouts app of the apple watch. Is it possible? Or it is not possible to get data from an active workout session from the workouts app.