Why can I use background delivery to realize background notifications when I run the app for the first time, but when I delete the app running in the background, and then reopen the app to run it in the background, there will be no background notification when the data changes?
Health & Fitness
RSS for tagExplore the technical aspects of health and fitness features, including sensor data acquisition, health data processing, and integration with the HealthKit framework.
Selecting any option will automatically load the page
Post
Replies
Boosts
Views
Created
I don't understand why elevation data is not stored in the sample using a standard length unit. Why is it stored in HKQuantityTypeIdentifier.flightsClimbed (which is 10 feet)?
Surely it is not a memory usage issue.
Treadmill GATT provides elevation in meters.
Using HKMetadataKeyElevationAscended for the total elevation gain throws away a lot of data.
Why is there no support for weighted vest or backpack? Changing body weight is not the same and provides incorrect energy. Users want to compare workouts with different weights. I don't see any metadata key for carried weight.
Topic:
App & System Services
SubTopic:
Health & Fitness
HealthKit background delivery only triggers when charging. I have set step monitoring to hourly frequency. Despite step changes, callbacks fail to arrive after 3-4 hours on battery, but trigger immediately upon connecting power. Observed for 2 days: background updates are only received when charging. The device is not in Low Power Mode, and Background App Refresh is enabled for the app in Settings.
I'm currently collecting real-time heart rate data using HKWorkoutSession. I want to track when the Apple Watch is physically removed from the user's wrist during an active workout.
However, I've noticed that workoutBuilder(_:didCollectDataOf:) continues to be called even after the watch is removed from the wrist.
Is there a way to detect when the Apple Watch is removed from the wrist during an active HKWorkoutSession? Or is this tracking not possible through the HealthKit framework?
Any guidance or alternative approaches would be appreciated.
Hello everyone,
I’m experiencing a visual issue when dismissing a sheet on iOS 26.
I’m using the same implementation shown in the official Apple documentation. While testing, I noticed that some apps do not exhibit this behavior. However, when running this code on iOS 26, the issue consistently occurs.
Issue description:
The sheet dismisses abruptly
A white screen briefly appears for a few milliseconds and then disappears
This results in a noticeable visual glitch and a poor user experience
I tested the exact same code on iOS 18, where the sheet dismisses smoothly and behaves as expected, without any visual artifacts.
Has anyone else encountered this issue on iOS 26?
Is this a known bug, or is there a recommended workaround?
Any insights would be greatly appreciated.
Thank you.
I am developing an iOS application that utilizes running workout data from the iOS Health app / Fitness app via HealthKit, with explicit user permission.
Before finalizing the app design, I would like to clarify several technical aspects related to data reliability, manual entry, record modification, and GPS route availability in HealthKit.
My questions are as follows:
1. Identifying manually added (non-physical) running workouts
When a running workout is created in the Health app without actual physical movement (for example, a workout manually added by the user),
is there any metadata, flag, or key in HealthKit that allows developers to distinguish these records from workouts generated through actual motion tracking (iPhone or Apple Watch)?
2. Editing existing running workout records
Is it possible for users, or for third-party apps with HealthKit write permission, to edit an existing running workout (e.g., distance, duration, calories) after it has been saved?
• If edits are allowed, are the original values preserved in any way, or are they fully overwritten?
3. Detecting modified workout records
If a running workout (whether originally auto-recorded or manually created) has been edited after creation,
is there any identifier, metadata field, source revision, or versioning mechanism in HealthKit that allows developers to detect that the workout has been modified?
4. Access to GPS route / running path data
For outdoor running workouts recorded with location services enabled:
• Does HealthKit provide access to GPS route data (running paths / location traces) associated with a workout?
• Is this route data accessible to third-party apps with user permission?
• Is route data available only for workouts recorded on Apple Watch, or also for iPhone-only recordings?
• Is there a way to determine programmatically whether a running workout includes valid GPS route data?
The overall goal is to understand whether, when building an app that relies on HealthKit running data, it is technically possible to differentiate motion-based workouts from manually added or edited records, and to assess the availability of route information for outdoor runs.
Any clarification or references to official documentation would be greatly appreciated.
Thank you
I'm developing a watchOS nap app that detects when the user falls asleep by monitoring heart rate changes.
== Technical Implementation ==
HKWorkoutSession (.mindAndBody) for background execution
HKAnchoredObjectQuery for real-time heart rate data
CoreMotion for movement detection
== Battery Considerations ==
Heart rate monitoring ONLY active when user explicitly starts a session
Monitoring continues until user is awakened OR 60-minute limit is reached
If no sleep detected within 60 minutes, session auto-ends
(user may have abandoned or forgotten to stop)
App displays clear UI indicating monitoring is active
Typical session: 15-30 minutes, keeping battery usage minimal
== The Problem ==
HKWorkoutSession affects Activity Rings during the session. Users receive
"Exercise goal reached" notifications while resting — confusing.
== What I've Tried ==
Not using HKLiveWorkoutBuilder → Activity Rings still affected
Using builder but not calling finishWorkout()
(per https://developer.apple.com/forums/thread/780220)
→ Activity Rings still affected
WKExtendedRuntimeSession (self-care type)
(per https://developer.apple.com/forums/thread/721077)
→ Only ~10 min runtime, need up to 60 min
HKObserverQuery + enableBackgroundDelivery
(per https://developer.apple.com/forums/thread/779101)
→ ~4 updates/hour, too slow for real-time detection
Audio background session for continuous processing
(suggested in https://developer.apple.com/forums/thread/130287)
→ Concerned about App Store rejection for non-audio app;
if official approves this technical route, I can implement in this direction
Some online resources mention "Health Monitoring Entitlement" from WWDC 2019
Session 251, but I could not find any official documentation for this entitlement.
Apple Developer Support also confirmed they cannot locate it?
== My Question ==
Is there any supported way to:
Monitor heart rate in background for up to 60 minutes
WITHOUT affecting Activity Rings or creating workout records?
If this requires a special entitlement or API access, please advise on
the application process. Or allow me to submit a code-level support request.
Any guidance would be greatly appreciated. Thank you!
Topic:
App & System Services
SubTopic:
Health & Fitness
Tags:
Entitlements
Health and Fitness
HealthKit
Hi!
I have over 800 days strike in closing my move circle. However oerfect month badge is not popping up for November, we have now mid of Dec and still no update.
I updated iOS to 26, did multiple resets and hard resets and still no badge. I checked many forums and post but any of given tips is working in my case.
i know it sounds funny, but it’s frustrating that I’m not getting this little gold medal to keep me motivated 😅
does anyone know how to deal with it? Is it common issue?
I am developing a running training app that coaches can use to create interval workout plans.
I can use HKWorkout to get information about Splits similar to that in Fitness app, but I can't get information about Intervals.
My idea is to show interval details when users view their completed custom interval workout plans.
Can I use Healthkit (or another feasible method) to get the actual distance or time of exercise in intervals workout ?
(I know the workoutPlan property, but it doesn't reflect the segments of a real interval training workout.)
Any insights or suggestions would be greatly appreciated!
Thanks in advance!
Topic:
App & System Services
SubTopic:
Health & Fitness
Tags:
Health and Fitness
HealthKit
WorkoutKit
Was able to use ai to help code my idea for a haptic heart rate monitor using watch se‘s ppg and accelerometer. Now if I could just get it on the App Store…
The second time i start a workout session, the beginCollection instance method on HKLiveWorkoutBuilder freezes.
To recreate run the Apple Sample Project Building a multidevice workout app. It looks like a bug with the HealthKit SDK and not the code but i could be wrong. The only workaround i found was erasing the simulator and reinstalling the app.
When calling beginCollection on HKLiveWorkoutBuilder the function never completes and gets stuck. (On the second workout session, the first session works flawlessly)
To reproduce:
Run the MirroringWorkoutsSample on WatchOS https://developer.apple.com/documentation/healthkit/building-a-multidevice-workout-app.
Start the workout and then end the workouts it should work perfectly fine the first time.
Start the workout and end again, and you should see the problem, the workout doesn’t end.
I am the developer of a workout app that allows users to create interval programs (e.g. Warm Up, Fast, Cool Down).
It is possible for me to store the data for the intervals along with the workout in the Health system by using WorkoutKit (or any other method)?
My aim is to make it so that the Fitness app shows the interval details when users view workouts created by my app.
Thanks in advance.
I am using this below code since WatchOS 10 to set the user steps observer and get the callback of steps whenever changes.
This is still working perfectly fine till watchOS 11 but when i updated to watchOS 26.1, I am not getting the callback of steps, like the observer is not working at all. I should get a callback inside query block whenever user take steps, but it is not working in watchOS 26.1.
func setupStepCountObserver(completion: @escaping (Double, Double) -> Void) {
let stepCountType = HKObjectType.quantityType(forIdentifier: .stepCount)!
let query = HKObserverQuery(sampleType: stepCountType, predicate: nil) { [weak self] _, completionHandler, error in
if let error = error {
print("Error setting up observer query: \(error.localizedDescription)")
return
}
// Fetch the latest step count data
self?.getLast20SecTodaysSteps(completion: completion)
// Call the completion handler to let HealthKit know you have processed the update
completionHandler()
}
// Execute the query
healthStore.execute(query)
// Enable background delivery of updates
healthStore.enableBackgroundDelivery(for: stepCountType, frequency: .immediate) { success, error in
if let error = error {
print("Error enabling background delivery steps: \(error.localizedDescription)")
} else if success {
print("Background delivery enabled for steps.")
}
}
}
Hi everyone,
we’re developing an app that lets users export selected bike rides to the HealthKit ecosystem. We created our app icon using the Apple Icon Composer and referenced the composer file in Xcode. Everything works fine, except that the logo doesn’t appear correctly in the Fitness app.
Has anyone experienced this issue or knows how to fix it?
Topic:
App & System Services
SubTopic:
Health & Fitness
Tags:
Health and Fitness
HealthKit
Icon Composer
Ever since upgrading to OS 26.1, I've noticed that HealthKit anchored object queries seem to be much slower-updating than normal. I was curious if Apple stated anything explicitly changed on this front? I use anchored object queries to update some of the workout metrics that HKLiveWorkoutBuilder doesn't report (like stepCount).
Can’t get the live data from ppg sensor (se os 26.x) for 0 latency parsing of haptics per each pulse (heart beat). any help would be cool.
b
I am working on a cycling fitness app and I want to read the cycling power recorded using my Garmin edge from the Garmin Connect App. Currently the data is not transferred to the Health/Fitness Apps. Ideally it would be good to be able to query the power samples similar to the heart rate samples, but even the average power would suffice, as I could then calculate the Kilojoules.
Hey everyone
I'm working on a health app that's heavily focused on HRV tracking and analysis, and I'm trying to figure out what's actually possible with AirPods Pro 3 from a developer standpoint. The hardware clearly has a much better heart rate sensor than the previous generation, but I'm hitting some walls when it comes to actually accessing the data I need.
So here's the situation I'm dealing with: When I query HealthKit for HRV samples, I'm not seeing anything coming from AirPods Pro 3. The device is obviously capable of tracking heart rate continuously during workouts and listening sessions, and from what I've read about the hardware, it should theoretically be able to capture the inter-beat intervals needed for HRV calculation. But either that data isn't being processed on-device, or it's just not being made available through the standard HealthKit data types that third-party apps can access.
What I'm really after is either direct HRV metrics (like SDNN, which Apple Watch already provides through HKQuantityTypeIdentifierHeartRateVariabilitySDNN) or even better, access to the raw R-R interval data. With R-R intervals, I could calculate RMSSD, pNN50, and other time-domain and frequency-domain HRV metrics that are super valuable for tracking recovery, autonomic nervous system balance, and stress levels. This would be especially useful since a lot of users wear AirPods during activities when they're not wearing their Apple Watch.
Has anyone managed to find a way to pull this data from AirPods Pro 3? Are there any private frameworks or entitlements I should be looking into? Or is this just fundamentally not exposed to developers at the OS level right now?
I've gone through the HealthKit documentation pretty thoroughly and haven't found anything that specifically addresses this, but I'm wondering if I'm missing something or if there are any known workarounds.
I'm also curious if anyone has heard anything from Apple about future plans to expose this data. It seems like a missed opportunity given how capable the hardware is and how much value developers could provide with access to this physiological data. Would love to hear if anyone else is working on similar features or has insights into the technical limitations here.
Hi everyone,
I’m building a health app with React Native using Expo Dev Client on a real iPhone. I need to read Apple Health (HealthKit) data, but the authorization sheet never appears—so the app never gets permissions and all queries return nothing.
What I’ve already done
Enabled HealthKit capability for the iOS target.
Added NSHealthShareUsageDescription and NSHealthUpdateUsageDescription to Info.plist.
Using a custom dev build (not Expo Go).
Tested fresh installs (deleted the app), rebooted device, and checked Settings → Privacy & Security → Health/Motion & Fitness.
Tried both packages: react-native-health and @kingstinct/react-native-healthkit. Same behavior: no permission dialog at first use.
Ask
Is there a known reason why the HealthKit permission sheet would not show on modern iOS when called from a React Native bridge (with Expo Dev Client)? Are there any extra entitlements, signing, or config-plugin steps required beyond HealthKit capability + Info.plist?
If you’re successfully fetching Apple Health data from React Native on recent iOS, could you share the exact steps that made the permission sheet appear and data flow (Expo config/plugin used, Xcode capability setup, profile/team settings, build type, bundle ID nuances, any Health app reset steps, etc.)? This would help me and others hitting the same “authorized call but no prompt/no data” issue. Thank you!