HRV BreatheDownload

Privacy

Privacy is the product.

A short, honest policy. The shape of our product is a consequence of caring about this.

Last updated: 2026-05-22

Your HRV data

HRV Breathe reads your heart rate variability data from Apple Health (with your explicit permission, granted in the iOS Health permission dialog). We use those readings to compute the before/after delta you see on the session-complete screen, and to compute the trends shown on the Stats tab.

We never transmit your HRV data off your device. It is stored locally on your iPhone (and synced privately via iCloud to your other Apple devices, if iCloud is enabled — same privacy guarantees that govern your Apple Health data generally). We have no server that receives, processes, or stores your HRV. We cannot read it because we never receive it.

Other data the app handles

  • Session history — duration, technique, time, and your before/after HRV deltas. Stored locally and in your private iCloud container (not visible to us).
  • App preferences — your goal, streak, technique settings, audio choices. Stored locally and in iCloud.
  • Local analytics — anonymous, on-device counts of which screens you visited and which features you used. Stored locally in a separate, non-iCloud database. Used by us only if you contact support and explicitly share a debug payload.

Subscriptions and purchases

All subscriptions and purchases are processed by Apple via StoreKit. We receive a receipt with a transaction ID and an anonymized user identifier; we do not receive your name, email, billing address, card number, or any payment information.

This website

This site (hrv.suur.io) uses Google Analytics 4 to count page views and understand which content works. Google Analytics sets cookies and assigns an anonymous identifier; it may collect approximate location (country / region), referring URL, and device type. We do not use it for advertising. You can opt out site-wide by installing the Google Analytics Opt-out Browser Add-on.

If you submit your email through the newsletter form, we store it with our newsletter provider so we can email you. We never sell, share, or use that email for any other purpose. You can unsubscribe in one click from any email we send.

Permissions the app requests

  • Apple Health (read-only).Only HRV (Heart Rate Variability SDNN). Required for before/after readings. The app works without it; you just won’t see the delta.
  • Notifications. Optional. Used for daily reminders, streak reminders, and Physiological Sigh reminders if you enable them. Turn off any time in iOS Settings.

Contact

Privacy questions go to hrv@suur.io. The person reading is one of the two people who built the app.