Vayu vs HRV4TrainingThe Complete Comparison
Both apps use heart rate variability, but they do very different things. Vayu guides your breathing in real time via haptic feedback on your smartwatch. HRV4Training measures your recovery and readiness. Here's how to decide which (or both) you need.
The Core Difference
Active breathwork tool. Guides you through breathing sessions using haptic vibrations on your wrist. Tracks HRV during the session to confirm you're achieving coherence.
Passive measurement tool. Measures your HRV each morning (via camera or HR monitor) to score your recovery and suggest training load for the day.
💡 Many athletes and biohackers use both: HRV4Training to know when they're recovered, Vayu to actively improve their HRV through breathwork.
Feature Comparison
| Feature | Vayu | HRV4Training |
|---|---|---|
| Primary Purpose | Guided breathwork | HRV tracking & recovery |
| Annual Price | $59.99/yr | ~$9.99 one-time |
| Free Tier | ||
| Apple Watch App | ||
| Wear OS App | ||
| Haptic Breath Guidance | ||
| Real-time HRV Coherence | ||
| Morning HRV Readiness Score | ||
| Training Load Analysis | ||
| Camera HRV Measurement | ||
| Breathing Techniques | 10+ | Basic pacer only |
| Screen-free Use | ||
| Android Support | ||
| iPhone Support |
Frequently Asked Questions
What is the difference between Vayu and HRV4Training?
Vayu is a real-time haptic breathwork app that guides breathing on Apple Watch and Wear OS using vibrations. HRV4Training is an HRV measurement and training readiness tool that analyzes your recovery using your phone camera or heart rate monitor. They serve different purposes: Vayu trains your breathing; HRV4Training tracks your recovery.
Can Vayu replace HRV4Training?
It depends on your goal. If you want guided breathwork with real-time HRV coherence feedback during sessions, Vayu is the better tool. If you want daily HRV tracking for training load management and recovery readiness (like athletes use), HRV4Training is purpose-built for that. Many users use both.
Does Vayu track HRV?
Yes. Vayu uses your Apple Watch or Wear OS smartwatch to track heart rate variability (HRV) in real time during breathing sessions, helping you achieve heart rate coherence. This is different from HRV4Training's morning HRV readiness scoring.
Is HRV4Training good for breathing practice?
HRV4Training has a basic breathing pacer but it's not the core focus. It's primarily a measurement and analytics tool. For structured guided breathwork with haptic cues and HRV coherence feedback, Vayu is purpose-built for that use case.
Which is cheaper, Vayu or HRV4Training?
HRV4Training costs approximately $9.99 one-time (iOS) or has a subscription option. Vayu costs $59.99/year ($8.99/month) with a 7-day free trial and a free tier. For pure breathing practice, Vayu offers more guided features per dollar.
Start Improving Your HRV Today
Vayu's haptic-guided breathwork helps you build HRV coherence, on your wrist, in real time. Try free for 7 days.
