Heart Rate Variability measurements recorded by your Apple Watch can give you insight on the stress level your body is under. By using HRV Tracker to track short-term measurements and long-term trends, you can see how your workload during the day, workout sessions or sleeping etc affect your body's readiness, recovery and stress level. Simply put, the higher your HRV is, the better.

***Get Notified***
HRV Tracker makes spotting drops in your HRV easy by monitoring your HRV measurements in the background and showing notifications when your HRV drops under your desired level. You can change the default notification level directly in your Apple Watch app.

***Apple Watch for daily tracking***
Browse through last seven days of HRV measurements by using the digital crown. See how measurements compare to your seven day period and individual days. By tapping the screen you can toggle through the first values of each day. Use complications on your Apple Watch to stay informed on changes in your HRV.

***Follow Long-term trend***
Follow your long-term trend on your iPhone and compare your short term measurements to all-time data. HRV Tracker automatically compares your 24h measurements to all-time data and provides a “health-battery” icon that reflects to your current stress level and readiness.

Data read from the Apple HealthKit database is only used to show information related to your Heart Rate Variability. Information read by HRV Tracker is only stored and used locally on your iPhone and Apple Watch.

***How is it measured***
Heart rate variability measurements used by HRV Tracker are calculated by measuring the variation between individual heartbeats. Your Apple Watch (Series 3 or later) automatically measures your HRV in the background and stores the outcome into HealthKit. HealthKit uses SDNN heart rate variability, which is calculated using the standard deviation of the inter-beat (RR) intervals between normal heartbeats (measured in milliseconds). Besides background measurements generated automatically by your Apple Watch you can use the Breathe app on your Apple Watch to generate new measurements.

Ratings and Reviews

4.5 out of 5
2 Ratings

2 Ratings

firegirlred ,

Nailed it

I use HRV for training and recovery. This app did exactly what I needed. I have a professional background in USA Cycling, USA Track and Field, USA Swimming, USA Triathlon, ACE Personal Training, college anatomy and physiology, and Emergency Medicine. All occupations are starting to see an emergence of HRV as a significant training/medical tool. After working my way through several other applications, this one did what I needed for predicting immediate changes without any frustration. Worth the purchase. I look forward to seeing how the app develops.

I’d love to offer insight based on my knowledge, experience, and needs.

Developer Response ,

Thank you for your feedback and great to hear that HRV Tracker fits your needs. We would be extremely happy to hear your professional insights and suggestions for future improvements. If you find the time you can contact us at

Bluecopper ,

So far so good!

I have an Apple 4 watch. I wanted to know my Heart rate variability and this does that. It’s pretty basic but is easy to use. I also added it to my watch face and you don’t have to use the breath function for it to work. I almost bought a whoop because I wanted the info quicker.

The recommendations I would make are to have the info come up in a score form based on sleep, HRV and workouts or other things. I am a coach for CrossFit and this is something we can use. I look forward to the update and would love to help if you guys needed some info. Thanks

Developer Response ,

Thank you so much for your feedback. All input is extremely welcome. If you have the time it would be great to get your professional insight in how you would like to use workout and sleep data together with HRV. You can contact us at


Sydvesti Oy
6.9 MB
Health & Fitness

Requires iOS 12.2 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© 2019 Sydvesti Oy


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