Health and Fitness

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Use HealthKit to enable your iOS and watchOS apps to work with the Apple Health app.

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HealthKit quantity types are not documented when generated by the system and on which Apple Watch models
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)
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425
Oct ’24
BGTaskScheduler with
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 }
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Aug ’24
Apple Health `export.zip` doesn't include several important data points.
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.
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468
Aug ’24
Unable to fetch Water data from HealthKit
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)
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330
Aug ’24
Health app iOS 18 Public Beta: Can't record Sleep Process with iPhone only (without wearable)
Hello! My sleep process isn't recorded with iPhone only (without wearable device) on iOS 18. On previous iOS versions it was recorded but now it doesn't work. I compare iOS 17 and iOS 18 Beta and I see the difference that in Full Schedule was deleted tumbler "Track Time in Bed with iPhone" that helped to track sleep process without wearable device (I found it here: Health app -> Browse -> Sleep -> Your schedule block and tap on "Full Schedule & Options" -> Scroll to the bottom). I didn't find any information from Apple about this changes in change log. And one more time: I don't use Apple Watch or any wearable device. Do you have any information about sleep tracking with iPhone only? Can I track sleep process only with iPhone?
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716
Aug ’24
watchOS 11 beta 5 - Problem workout duration wrong on automatically appearing widget
On watchOS 11 when starting a workout session a widget appears automatically on the smart stack showing the pause or resume button. It´s a great feature, but my problem is that the duration is not showed correctly because the prepare phase of the workout and the pause / resume events are not taken into account calculating the duration. In my project I don´t use the workout builder. I have made a sample project with workout builder and there the duration is shown correctly. It would be great if this automatically appearing widget would also show the time correctly in case the workout builder is not used (prepare phase and pause resume events considered, otherwise it looks like a bug). Is there any way to opt out of this automatically appearing widget or could this be fixed? Any comments from an Apple engineer on this?
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398
Aug ’24
Missing app icon in the Fitness app
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.
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400
Aug ’24
Can my iOS app access live cycling workout session data from the workouts app on the apple watch
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.
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329
Jul ’24
Workout validation and Scheduler logic
Hey folks, a couple of questions regarding WorkoutKit: What happened to validation errors? They are mentioned in the WWDC23 video, but no longer are present in the API. It seems a fatal error is thrown if the workout fails validation (for example setting a negative distance in a workout goal). What is the logic of the WorkoutScheduler, if we try to add more workouts than is allowed? If the limit is 50, what happens when we try to add a 51st? Are workouts de-queued based on date or anything? API documentation is very sparse Do completed workouts and workouts with a scheduled date in the past stay in the WorkoutScheduler? Are we responsible for removing these? I guess my overall question regarding the WorkoutScheduler is, what are we responsible for managing and what is handled gracefully for us. None of these answers seem to be openly available, but if anyone know anecdotally or even better from the WorkoutKit team, I'd be very grateful! Thanks!
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387
Jul ’24
Step Data Duplication Issue with Apple Health Integration
We are integrating Apple Health step data into our mobile application, Diyetkolik. However, we have received feedback from our users indicating that the step data appears to be significantly higher than expected. After conducting thorough research, we discovered that users who wear a smartwatch are experiencing step data duplication. Both the smartwatch and the phone's step data are being collected and combined, leading to inflated step counts in our application. We kindly request your assistance in addressing the following issues: How can we differentiate between step data from the smartwatch and the phone to avoid duplication? Are there best practices or specific APIs we should use to filter and manage step data more accurately? Can you provide guidance on how to implement a solution that ensures accurate step count data for users wearing multiple devices? We appreciate your support in resolving this matter to enhance the accuracy of our application and improve user experience.
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487
Jul ’24
Watch not detecting stands
During WatchOS 10 dev betas and now into 11 dev betas, I am still seeing were stands are not being detected. What I do not know is if the steps are detected. But here is the situation. Today: I was going on some wiring outside and in the basement. I was clearly up and moving around for over an hour. I can see on my camera's I went outside at 15:50, came back in at 16:18. Then went to my basement and was working down there from 16:19 until 16:30. After that cleaned up my mess. So I was up and down stairs and without a doubt standing. At 16:50 I got the reminder to stand. Other cases: 1: I get home from work about XX:10 . I have to walk about 50 ft from my garage to my house, up stairs, take the dog out, make dinner, and finally get my chair to eat and at XX:50 I get the reminder. 2: I'm at work, I'm going to get lunch and I have to walk pretty far and again at XX:50 I get the reminder. This is very rare, but it has happened. Now, in a odd twist. I get up in the morning at XX:50, I have 10 steps to the bathroom, and I manage to get that hourly stand.
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412
Jul ’24
Request for Solution to Retrieve Step Count Data from Apple Health Kit for QSFA App in Background Mode
Dear Apple Team, QSFA app belongs to the Ministry of Sports and Youth in Qatar and there's a feature which will get the step count from the Apple health kit. Our issue that while the app is closed or on the background, we are not getting the steps count for the users and we need the steps data to keep sending notifications based on the steps as motivations to the users to keep walking and do sport. Please give us a suggestion or solution on how we can retrieve the steps data as we have limitations on this.
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310
Jul ’24
Writing Workout Data into HealthKit
Hello, I am writing workout data into HealthKit using the HKWorkoutBuilder API for specific types of workouts (e.g. Cycling) in particular various time series data for power, speed, etc.. but I am unable to see the average values for these quantities on the workout summary page in the Apple Fitness app ? (I am only able to see the graph data in the show more / workout details) anything specific to be done in order to have the data shown in the main summary ?
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432
Jul ’24
Apple Watch HealthKit Queries Beyond 7 Days?
This has long been a frustration of mine on Apple Watch, and I've brought it up at WWDC labs every year to no avail but while the limitation on the Apple Watch to only be able to query 7 days of HealthKit data may have made sense early in the AW's lifetime for battery preservation etc., it really no longer makes sense in modern AW development. Especially not with stand alone watch apps, as a developer I am prohibited from building the same experience on the Apple Watch that I can in an iPhone app. For example, my app looks at your current health metrics and compares them to your 60 day baseline to identify any deviations from your normal ranges. I cannot create the same experience on the watch using purely HealthKit queries, and am limited to using either iCloud or Watch Connectivity which have their own drawbacks and are not an option for a stand alone watch app. Can we finally expand the length of HealthKit queries the AW can make so that we can build the same powerful experience on the watch that we can on iPhone? Thank you! Gary See also Feedback FB7649612 (from April 2020).
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584
Jun ’24
Is there a way to know users have enabled pausing their Activity Rings?
Hi everyone, With iOS 18 and watchOS 11 it is possible to pause your activity rings so that a streak is not broken when you are ill or something like that. When we request data from the HealthStore, is there a way to know that a user has set this option for a particular date or period? Or will the data for that date just return nil for all 3 ring values or even skip the day in the dataset? I have an app in which I also keep track of people's streaks, so it would really useful to know if the activity rings are paused. Thanks in advance!
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576
Jun ’24