Apple Watch Breathing
The breathing app that reads your Apple Watch, not the other way around
Vayu is a real-time biofeedback breathing platform that reads heart rate variability (HRV) from your Apple Watch during every session. It guides your breath through haptic pulses on your wrist. No screen. No audio. Just your physiology, responded to in real time.
How Vayu works with Apple Watch
Open Vayu on your watch
Launch the Vayu watchOS app on any Apple Watch Series 3 or later. Select a breathing technique: box breathing, resonance frequency, 4-7-8, or a custom ratio.
Your HRV is read live
The moment your session starts, Vayu reads your heart rate sensor and computes your RMSSD in real time. No baseline required. Your nervous system state shapes the session as it happens.
Haptics guide your breath
Instead of a visual timer or audio cue, Vayu taps your wrist with a haptic pattern: one pattern for inhale, another for exhale, another for hold. You feel the rhythm without looking at anything.
How Vayu compares
Apple Watch breathing apps: feature comparison
| Feature | Vayu | Calm | Breathwrk | Headspace |
|---|---|---|---|---|
| Reads live HRV from Apple Watch | ✓ | ✗ | ✗ | ✗ |
| Haptic guidance (no screen needed) | ✓ | ✗ | ✗ | ✗ |
| Works without phone nearby | ✓ | ✗ | ✗ | ✗ |
| Real-time HRV feedback on watch face | ✓ | ✗ | ✗ | ✗ |
| Resonance frequency breathing | ✓ | ✗ | ✓ | ✗ |
| Free tier available | ✓ | ✓ | ✓ | ✓ |
Questions about Vayu and Apple Watch
What breathing app works best with Apple Watch?
Vayu is the only breathing app that reads real-time HRV from Apple Watch and responds with haptic guidance. Unlike Calm or Breathwrk, Vayu does not require a screen during sessions. Guidance is delivered through wrist haptics while the watch tracks your HRV live.
Can Apple Watch guide breathing without looking at your phone?
Yes. Vayu delivers breathing guidance as haptic pulses directly on your Apple Watch wrist. You do not need to look at your phone or the watch screen. The haptic pattern tells you when to inhale, hold, and exhale.
Does Vayu read HRV from Apple Watch in real time?
Yes. Vayu accesses the Apple Watch heart rate sensor during sessions and computes RMSSD, the standard clinical measure of short-term HRV. Your HRV score updates live on the watch face as you breathe.
Which Apple Watch models does Vayu support?
Vayu supports all Apple Watch models with watchOS 7 or later, including Apple Watch Series 3 through Ultra 2. The app runs independently on the watch for screen-free sessions.
Try it free on your Apple Watch
Download Vayu, open the watchOS app, and complete your first haptic breathing session in under 3 minutes.
Download on App StoreFree. No subscription required to start.
