"Its all you need...and all you'll want once you start analyzing your own data" - Apple store review
"I've tried almost every HRV app I can get my hands on in the App Store. This is on my short list of go to apps for giving valuable information about your parasympathetic nervous system activity over time. I love it." - Apple store review
Forget the chest strap
Tired of strapping that chest strap on every morning?
Here is the good news, current generation phones can be used to detect changes in blood volume during a cardiac cycle, by illuminating the skin and measuring changes in light absorption using the camera.
HRV4Training is the first app to use this technique to measure your Heart Rate and Heart Rate Variability reliably, without requiring any sensor. Check out our validation on iPhones and Android devices.
HRV4Training on iOS works with regular Bluetooth 4.0 sensors as well (e.g. a Polar H7), while on Android both Bluetooth 4.0 and ANT+ are supported
Acute HRV Changes Analysis
How does your body respond to training, travel, alcohol intake, and other stressors?
HRV Trends Analysis
Combining multiple parameters to better understand the big picture. How are you adapting to your current training plan?
Investigate the relation between manual annotations, training, and physiological data
Training Load Analysis
Analyze chronic training load / fitness, acute training load / fatigue & injury risk
A marker of your cardiorespiratory fitness [requires a Strava or TrainingPeaks account & heart rate data] related to performance
Training Polarization Analysis
Get an overview of how hard you are training and potentially polarize more your training to optimize performance
Lactate Threshold Estimation
Improve your training pacing and racing strategies based on your estimated lactate threshold