Platforms
IOS, ANDROID
Free Tier
No
Paid Price
$9.99 one-time
Sensors
4 supported
The Verdict
Best for athletes who want training load context with their HRV data. The one-time price is refreshing, and the science-backed approach inspires confidence. Camera readings work in a pinch.
Features
- Morning HRV measurement
- Camera-based readings (no sensor needed)
- Training load tracking
- Acute/chronic workload ratio
- Science-based recommendations
Pros
- One-time purchase
- Camera option needs no hardware
- Strong scientific foundation
- Training load integration
Cons
- Less polished interface
- Camera readings less accurate
- Steeper learning curve
Camera-Based Measurement
HRV4Training can measure HRV using your phone's camera and flash against your fingertip. While less accurate than a chest strap, it works well and removes the barrier of needing additional hardware.
Training Integration
The app tracks your training load and shows how HRV responds to your workouts. The acute/chronic workload ratio helps identify when you're building fitness vs. accumulating fatigue.
Compatible Sensors
- Polar H10
- Polar Verity
- Garmin Hrm
- Phone Camera (no sensor needed)