Connect Apple Health to Astral on iPhone and Apple Watch

Connecting Apple Health lets Astral read your workouts recorded on Apple Watch and health metrics tracked by your iPhone, such as resting heart rate, heart rate variability, sleep, and VO2 max. This gives your AI coach a more complete view of your fitness beyond just your runs.

Apple Health sync is available on iOS only. You’ll need the Astral app installed on your iPhone.

Connect Apple Health

Open Integrations in Astral

In the Astral app, tap Settings → Integrations, then tap Connect next to Apple Health.

Grant HealthKit permissions

iOS will show a permissions dialog listing the health data Astral would like to read. Review the list and tap Allow All (or choose individual permissions), then tap Done.

Sync your data

Once permissions are granted, Astral begins reading your workouts and health data from Apple Health. Your existing workouts and recent health metrics will appear in Astral.

For the best experience, allow access to Workouts, Heart Rate, Heart Rate Variability, Sleep, and Active Energy. Astral uses these to give your AI coach a fuller picture of your training load and recovery.

What gets synced

Workouts

Astral imports workouts you’ve recorded with Apple Watch or any app that saves to Apple Health, including:

Distance, duration, and pace
Calories burned
Heart rate — average and per-second samples if available
GPS route — if your workout includes location data
Activity type — runs, trail runs, treadmill runs, and other cardio workouts

Astral syncs all workout types that Apple Health categorizes as running or cardio exercise.

Daily health metrics

In addition to workouts, Astral reads the following daily health data from Apple Health:

Metric	Used for
Resting heart rate	Tracking cardiovascular fitness trends
Heart rate variability (HRV)	Recovery scoring
Sleep duration and stages	Recovery and readiness insights
Daily steps	Activity load estimation
VO2 max	Aerobic fitness tracking (if measured by Apple Watch)

Health metrics are synced per day and updated automatically when the Astral app is open.

How to sync

Unlike Strava and Garmin, Apple Health doesn’t push data automatically — the Astral iOS app reads from HealthKit when it runs. To keep your data current:

Open the Astral app periodically to trigger a sync.
Astral reads any workouts or health data that have been added since the last sync.
Duplicate workouts are detected automatically — if the same workout appears in both Strava (or Garmin) and Apple Health, Astral imports it only once.

Privacy

Your health data stays on your device until you open the Astral app and it syncs. Astral only reads the data types you explicitly approved in the HealthKit permissions dialog. You can review or change these permissions at any time in the iOS Settings app under Privacy & Security → Health → Astral.

Revoking a permission in iOS Settings doesn’t delete data already synced to Astral. To remove your data from Astral, contact support or delete your account.

Disconnect Apple Health

Open Integrations

In the Astral app, go to Settings → Integrations.

Disconnect

Tap Disconnect next to Apple Health. Astral will stop syncing data from HealthKit.

To fully revoke Astral’s access to your health data, also go to iOS Settings → Privacy & Security → Health → Astral and turn off all permissions there.

Troubleshooting

Workouts aren’t appearing in Astral

Open the Astral app — sync happens when the app runs, not in the background.
Check that Workouts permission is enabled in iOS Settings → Privacy & Security → Health → Astral.
Confirm the workout is saved in the Apple Health app first. Open the Health app and look under Browse → Activity → Workouts.

Health metrics (sleep, HRV) aren’t showing up

Make sure the relevant permissions (Sleep, Heart Rate Variability, etc.) are enabled in iOS Settings.
Some metrics like HRV and VO2 max are only recorded by Apple Watch. If you don’t use an Apple Watch, these values won’t be available.

My workout appears twice If you use Strava or Garmin alongside Apple Health, the same run may be recorded in multiple sources. Astral deduplicates workouts that start within 60 seconds of each other and are the same activity type. If you still see a duplicate, contact support.