HRV Sync

Sync Garmin HRV to Apple Health

Garmin Connect doesn't send your overnight HRV to the Health app. HRV Sync does it from your iPhone, free.

Download on the App Store

Free download · iPhone with iOS 17 or later · no subscription

New: Mindful Minutes and a Vitals Pack for VO2 max, SpO2 and respiration →

What it adds to Apple Health

Garmin Connect already sends steps, heart rate, sleep and workouts; HRV Sync adds what it leaves out.

What Garmin sends, and what it leaves out →

Free

No subscription

  • HRV: each overnight reading from your Garmin account, not a single nightly average
  • Mindful Minutes: your Garmin meditation and breathwork sessions
  • Recovery HRV on iOS 27 and later: Garmin HRV also saved as Apple's RMSSD type, if you turn it on

Vitals Pack

One-time purchase, $9.99 in the US

  • VO2 max: Garmin's running estimate, one value per day
  • Respiratory rate: your average during sleep
  • Blood oxygen (SpO2): your average during sleep; turn on Pulse Ox during sleep on your watch

The first sync brings in your past year, then only new days.

How to get VO2 max and SpO2 into Apple Health →

One Sync to Health button sends everything you have.

How it works

  1. Tap Connect and sign in with your Garmin account. Two-factor codes work, and your password goes only to Garmin.
  2. Tap Enable next to Health and allow HRV Sync to write. It never reads data from other apps or your Apple Watch. Health data is never sent to us, and the app has no analytics or ads.
  3. Tap Sync to Health. The first time it suggests the last 7 days; pick an earlier start date to bring in weeks or months.

Also in the app

Live HRV with a chest strap

The Measure tab shows live HRV (RMSSD) from a Bluetooth heart rate strap, with a 3-minute morning reading and an optional Breathe 6/min pacer. No Garmin account needed.

Which straps work?

Straps and armbands that send beat-to-beat intervals over Bluetooth; we test with a COOSPO HW9. Watches that broadcast heart rate don't work, because they don't send beat intervals. Readings stay on your iPhone and are not saved to Apple Health; you can export them as CSV. No strap yet? The app has a demo mode.

Shortcuts

Run Sync HRV or Sync All from Shortcuts, Siri, Spotlight or the Action Button, for Today, Yesterday or the Last 7 Days. A daily Shortcuts automation can run them even while your iPhone is locked.

Questions

Does Garmin Connect send HRV to Apple Health?

No. Garmin's support page lists what Garmin Connect sends to Apple Health (steps, distance, heart rate, sleep, workouts, energy, weight and a few body measurements), and HRV isn't on it. HRV Sync reads your overnight HRV from your Garmin account and saves it in the Health app.

Is HRV Sync free?

Yes. HRV, Mindful Minutes, Recovery HRV, the Measure tab and both Shortcuts are free, with no subscription. The optional Vitals Pack (VO2 max, sleep respiratory rate and blood oxygen) is a one-time in-app purchase: $9.99 in the US, and the App Store shows your local price.

Which Garmin watches work?

Garmin watches that record HRV during sleep. HRV Sync reads from your Garmin Connect account, so your watch has to sync there first. Vitals Pack values come over only if your watch records them: a VO2 max estimate, respiration during sleep, and blood oxygen with Pulse Ox during sleep turned on.

Why is my Garmin HRV different from my Apple Watch HRV?

Garmin measures HRV as RMSSD. Health's classic Heart Rate Variability type, which Apple Watch has filled for years, holds SDNN, a different measure, so those numbers aren't directly comparable. HRV Sync saves Garmin's RMSSD in that type so apps keep working, and on iOS 27 and later it can also save it as Recovery HRV, Apple's RMSSD type. Compare Garmin values with each other over time.

Will Athlytic, Bevel or other apps see my Garmin HRV?

Apps that read Heart Rate Variability from Apple Health can read the values HRV Sync saves there. How each app uses them is up to that app, so check its own help pages.

Does it sync automatically?

Not on its own. Tap Sync to Health in the app, or set up a daily Shortcuts automation with Sync HRV or Sync All; it can run even while your iPhone is locked. Run it as often as you like: anything HRV Sync already saved is skipped, so it never adds the same reading twice. HRV you added by hand or with another app isn't checked, so remove it to avoid doubles.

Is my Garmin password or health data sent to your servers?

No. Your password is sent only to Garmin and is not stored; the Garmin sign-in token stays in your iPhone's Keychain. Health data is never sent to us. The app has no analytics, advertising or tracking. Details are in the Privacy Policy below.

Get your Garmin HRV into Apple Health

Free download. HRV sync is free, with no subscription and no ads.

Download on the App Store

Privacy Policy

Last updated: November 2, 2026

HRV Sync is designed with your privacy in mind. Here's what the app does with your data:

Garmin Account

Your password is sent only to Garmin and is not stored. A Garmin sign-in token, your Garmin display name and your Garmin profile ID (never your password) are kept in your iPhone's Keychain until you tap Disconnect Garmin Account in Settings. The app talks to Garmin directly to read your HRV, your meditation and breathwork sessions and, with the Vitals Pack, VO2 max, sleep respiratory rate and sleep blood oxygen. To connect, it also downloads a small public configuration file from our server; no account or health data is sent with that request.

Health App

HRV Sync writes HRV and mindful minutes, and with the Vitals Pack VO2 max, sleep respiratory rate and blood oxygen, to the Health app on your device. It reads back only the samples it saved itself, to avoid duplicates, and never reads data from other apps or your Apple Watch. Health data is never sent to us, never shared with third parties and never used for advertising.

Measure

Strap readings stay on your iPhone unless you export them.

Contact Form

If you send a message from the app, its text, your optional email address and optional diagnostics are passed by our server (Google Firebase) to an email delivery service (Resend) and arrive in our support inbox, only so we can answer you. Diagnostics are the app version, iOS version and device model, never your health data, passwords or sign-in tokens. The contact page on this website works the same way, except that it asks for your email address so we can reply. We keep messages only as long as needed to help you; to have yours deleted, write to info@hrvsync.app.

Purchases

Handled by Apple. We never see your payment details.

No Analytics or Tracking

The HRV Sync app does not include any analytics, advertising, or tracking frameworks. This website uses Cloudflare Web Analytics for aggregate page views and performance without cookies, local storage, or user profiling. Garmin credentials and HRV data are not sent to website analytics.

Data Storage

Support

For questions, issues or feedback, write to info@hrvsync.app or use the contact form.

Common issues

Disclaimer: HRV Sync is not a medical device. HRV Sync is an independent app and is not affiliated with, endorsed by, or sponsored by Garmin Ltd. or Apple Inc. Garmin® is a registered trademark of Garmin Ltd. Apple® and Health® are trademarks of Apple Inc.
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