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Kubios HRV - Daily Readiness

Kubios HRV - Daily Readiness

Heart rate variability

146 ratings
12 reviews
💪 Health & Fitness
Free

Details

  • Released
  • Updated
  • November 15, 2020
  • June 22, 2026

Features

Developer

Kubios Oy
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About

This app uses heart rate variability (HRV) to provide insights into your daily readiness and physiological stress. It requires a compatible Bluetooth heart rate sensor for measurements. Offers modes for personal readiness monitoring and advanced research recordings.

✓Daily readiness monitoring
✓Custom HRV recordings
✓Scientifically validated algorithms
✓Physiological recovery and stress tracking
✓Comparison to population norms
✓Support for Polar HR sensors
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What's New in Kubios HRV

1.8.14

June 22, 2026

- Improved long-term stability - Enhanced sensor connectivity - Improved time synchronization between channels

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User reviews

Most RecentHighest RatedLowest Rated

Good app, 2 potential features to make it amazing

I use the iPhone accelerometer-based readiness measurement every morning. I’d love Apple Health integration and Shortcuts/App Intents support. Ideally I could trigger a readiness measurement from a Shortcut and automatically write the resulting HRV value to Apple Health without taking screenshots. But other than it does the job well and for free
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BaasilatronBaasilatron

great!

please consider an option to sync with apple health
jackjack5225jackjack5225

Response from developer

Thanks for the 5 stars! We've passed your request for Apple Health integration along to our development team.

Scores are completely off

I was using this app for about two weeks with the Apple Watch paired with the H10 polar strap, and the scores were completely opposite on how I felt.

I also was also trying Elite HRV and Sleep2. They were much more in sync with my readiness after good nights and bad night of sleep and stress.
ARoninLiberalARoninLiberal

Response from developer

Thank you for your feedback, and we’re sorry to hear about your experience. Readiness scores can sometimes feel inconsistent during the first couple of weeks, as the app needs enough data to establish your personal baseline. After a few weeks of regular use, the scores typically become much more accurate and reflective of your true recovery and stress levels.

Tweak UI

Interface for the mobile app needs to have the option to utilize the dark mode. Or at change it to a a dark background
ARoninLiberalARoninLiberal

Response from developer

Thank you for your feedback. The Kubios mobile app does support Dark Mode. The app follows your phone’s system appearance settings, so please make sure Dark Mode is enabled in your device’s system settings and that you’re using the latest version of the app. If you’re still unable to enable Dark Mode, please contact us at support@kubios.com with your phone model and operating system version, and we’ll be happy to help.

Doesn’t pair with sensor

Doesn’t pair with sensor. Said to use the Polar H10. Paid over $100.00 for it and cant get it to work with the app. Works with other apps. I was really looking forward to trying this out too.
Cfred76Cfred76

Response from developer

Sorry to hear about your experience. Please contact us at support@kubios.com, so we can help you resolve the connection issue with your sensor.

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FAQ

What is Kubios HRV used for?

Kubios HRV is used to monitor daily readiness and physiological stress through heart rate variability (HRV) analysis. It helps users understand their recovery status and compare their HRV values to population norms.

Does Kubios HRV require a heart rate sensor?

Yes, to make HRV measurements with Kubios HRV, you need a Bluetooth heart rate sensor, such as a Polar H10, Polar OH1, or Verity Sense.

What are the two modes of operation in Kubios HRV?

Kubios HRV has a Readiness Measurement Mode for personal monitoring of daily readiness and a Custom Measurement Mode designed for researchers and health professionals for various HRV recordings.

Is Kubios HRV suitable for professional athletes?

Yes, the readiness monitoring feature is used by professional athletes for training optimization. It provides objective information about overall bodily stress and cardiovascular health.

Can Kubios HRV be used for research purposes?

Yes, the Custom Measurement Mode is specifically designed for researchers, health and wellbeing professionals, and sport scientists, supporting test-subject management and live data acquisition.

What kind of data can Kubios HRV collect with Polar sensors?

When used with Polar sensors like H10, OH1, and Verity Sense, Kubios HRV can read live electrocardiogram (ECG), heart beat interval (RR), photoplethysmogram (PPG), and inter-pulse interval (PPI) data.

How accurate are the HRV analysis algorithms in Kubios HRV?

Kubios HRV uses scientifically validated HRV algorithms that have achieved gold-standard status in scientific research and are used at approximately 1200 universities worldwide.

What devices is Kubios HRV available on?

Kubios HRV is available on iPhone, iPad, and iPod, as indicated by its support for these devices.