Kubios HRV

3.7
457 reviews
10K+
Downloads
Content rating
Everyone
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this app

Kubios HRV app uses scientifically validated heart rate variability (HRV) algorithms (used by scientists all over the world) to provide reliable information about your wellbeing and daily readiness. To make HRV measurements with the app, you need a Bluetooth heart rate (HR) sensor, such as Polar H10. Kubios HRV app has two modes of operation:

1) Readiness Measurement Mode monitors changes in your daily readiness status. By doing short (1-5 min), controlled resting HRV measurements regularly, you will receive reliable information about your physiological recovery and/or stress, how it changes from day to day, and how your HRV values compare with normal population values. Readiness monitoring is used by professional athletes in training optimization but can also be used by sports enthusiasts or anyone interested in their wellbeing, as it provides objective information about overall bodily stress as well as cardiovascular health.

2) Custom Measurement Mode, designed for researchers, health and wellbeing professionals, and sport scientists, conducts various types of HRV recordings. This measurement mode supports test-subject management, short- and longer-term measurements, live data acquisition, as well as event markers. Since the app is built with Polar mobile SDK, it can read live data from Polar sensors, including electrocardiogram (ECG) and heart beat interval (RR) data from Polar H10 sensors and live photoplethysmogram (PPG) and inter-pulse interval (PPI) data from optical Polar OH1 and Verity Sense sensors. Thus, when used together with these Polar sensors, the custom measurement mode will provide an easy-to-use, light-weight, affordable way to obtain ECG, PPG and RR/PPI recordings. Regarding RR recording, the app also supports other Bluetooth HR sensors available on the market. Kubios HRV software license, which supports this measurement mode is required to store measurement data.

HRV is a reliable measure of autonomic nervous system (ANS). It tracks the beat-to-beat changes in RR interval arising from the continuous regulation of heart rate by the sympathetic and parasympathetic branches of the ANS. Kubios HRV analysis algorithms have achieved gold-standard status in scientific research, and our software products are used at roughly 1200 universities in 128 countries. The main HRV parameters include the parasympathetic nervous system (PNS) and sympathetic nervous system (SNS) indexes, the computations of which have been optimized, using a large reservoir of scientific research results, to provide accurate interpretation of recovery and stress.
Updated on
Sep 3, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, Health and fitness, and App info and performance
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

3.9
442 reviews
Donald Newcomb
October 14, 2025
Excellent app! I've only been using it for a few months, but it works well as part of my efforts to track my wellness and diet.
Did you find this helpful?
Kubios Oy
October 24, 2025
Thank you for your kind feedback! We're happy to hear that Kubios supports your wellness tracking efforts. Wishing you continued success on your health journey!
Google User
August 26, 2025
I have been using your app for more than 4 years and I would be curious to test the accelerometer measurement feature, but after the latest update the function is not available and I can’t find it in the settings either... If you could guide me, I would be grateful.
Did you find this helpful?
Kubios Oy
September 19, 2025
Thank you for your message and for using Kubios for more than 4 years! The accelerometer measurement feature is available when no external sensor is connected. If you still experience problems, please contact us at support@kubios.com
Yvonne
April 27, 2021
Great app - pairs easily with my Polar H10. One annoyance is that I keep inadvertently losing readings because readings must be accepted twice before saving - once on an initial page where you include notes/smiley status, and then again on the final page. On my phone, you need to scroll down to find the final "Done" button; would be better if the "Done" option were higher up on the page, and scrolling was not needed to see the final option to save.
28 people found this review helpful
Did you find this helpful?

What’s new

– Added support for sensorless, accelerometer-based HRV readiness measurement (beta) — monitor your stress and recovery without a heart rate sensor.
– Performance improvements and minor bug fixes.