HRV4Training
The first scientifically validated Heart Rate Variability (HRV) app. HRV4Training provides HRV based insights to help you quantify stress; better balance training and lifestyle; and improve performance. HRV4Training does not require a heart rate monitor; since it can accurately assess your HRV using the phone's camera. HRV4Training also works with Apple Watch; the Oura ring and all compatible Bluetooth SMART sensors. HRV4Training is also the first app that goes beyond simple measurements and provides insights on: 1) acute or day to day HRV changes in response to different stressors (alcohol; travel; sick days; training; menstruation; etc.) 2) long term multi-parameter trends to look at the big picture 3) correlations between physiological measurements and annotations 4) training load analysis; fitness; fatigue; readiness to perform and injury risk 5) VO2max estimation for runners linking the app to Strava or TrainingPeaks and using a heart rate monitor during their workouts 6) Training Polarization analysis (or 80/20) 7) Lactate Threshold Estimation for runners linking the app to Strava or TrainingPeaks and using a heart rate monitor during their workouts 8) Weekly and monthly summaries to track progress. All data is processed inside the app in order to provide you with actionable interpretations that can help optimizing your training plan and performance. Supported devices for the camera measurement: iPhones 5; 5S; 6; 6S; 6+; 6S+; SE; 7; 7+; 8; 8+; X; XS; XS Max; XR; 11; 11 Pro; 11 Pro Max; 12 mini; 12; 12 Pro; 12 Pro Max; 13 mini; 13; 13 Pro; 13 Pro Max; 14; 14 Plus; 14 Max; 14 Pro; 15; 15 Max; 15 Pro; 16; 16 Max; 16 Pro Currently unsupported devices for the camera measurement: iPhones 4S; iPads and iPods - These devices require a chest strap. Other features: - HRV-based advice helps you to adapt your trainings based on objective measures of recovery - TAGS: lets you tag your sleep; mental energy; muscle fatigue; stress and all other parameters that can help you understand what is influencing your physical condition and physiological stress - Works with Bluetooth SMART heart rate monitors (a Polar H7 is recommended) or simply your phone's Camera - Integrates with the Health app (writes heart rate; and sleep; read sleep time) - Configurable test (single or orthostatic; choose test duration between 1; 3 or 5 minutes) - Extracts and stores the following features while lying down and/or standing: heart rate; mean of beat-to-beat intervals (AVNN); standard deviation of beat-to-beat intervals (SDNN); square root of the mean squared difference of successive R-Rs (rMSSD); number of pairs of successive R-Rs that differ by more than 50 ms (pNN50); low frequency power (LF; 0.04-0.15 Hz); high frequency power (HF; 0.15-0.40 Hz) - Shows the PPG signal view to ensure signal quality during the test if the camera is used instead of a bluetooth SMART sensor - HRV4T Recovery Points to provide a single; straightforward metric to analyze your physical condition - Population summaries and people like you comparisons to put your data into perspective - Analysis of compliance and consistency - Data export via email or Dropbox - Integrates with TrainingPeaks; Oura; Strava and Coros HRV4Training requires to register an account with your email address; so that your data can be backed up safely and retrieved in case anything happens (app issue; changing phone; etc.). HRV4Training does not provide medical advice. It is intended for informational purposes only. Consult a medical professional before making health or lifestyle decisions. Please find an overview of the relevant scientific literature in our guide; here: https://marcoaltini.substack.com/p/the-ultimate-guide-to-heart-rate
According to SubPrice AI's current price data, HRV4Training (App Purchase) subscription prices vary significantly across 3 regions. The lowest price region is Japan (¥70.03/mo), the highest is United Kingdom (¥91.81/mo), with maximum savings of 24%.
Global Price Table
App Purchase · 3 regions
| # | Region | Savings | ||
|---|---|---|---|---|
| 1 | 🇯🇵Japan | ¥1,500JPY | ¥70.03 | -24% |
| 2 | 🇺🇸United States | $9.99USD | ¥72.53 | -21% |
| 3 | 🇬🇧United Kingdom | £9.99GBP | ¥91.81 | — |
Price Trends
* Historical data is simulated for demo purposes
Price Statistics
Plan Features
Prices are sourced from public data. Cross-region purchases carry platform policy risks. We are not responsible for purchase outcomes.
⚠️ Cross-Region Purchase Risks
Cross-region purchases may involve account region restrictions, payment verification, refund difficulties, exchange rate fluctuations, tax changes, and platform policy updates. SubPrice AI provides price information and decision support only. We do not guarantee purchase success or take responsibility for outcomes. Please research the target region's platform policies before proceeding.
Frequently Asked Questions
Which region has the cheapest HRV4Training subscription?
According to SubPrice AI data, HRV4Training (App Purchase) is currently cheapest in Japan at approximately $9.65/month. Prices may change with exchange rates and platform policies.
How often are HRV4Training prices updated?
SubPrice AI automatically scrapes the latest subscription prices from App Store pages across all regions daily, converting them using real-time exchange rates. Data is typically updated around 14:00 Beijing time (06:00 UTC) each day.
What are the risks of cross-region purchases?
Cross-region purchases may involve: 1) Changing your Apple ID region; 2) Needing local payment methods or gift cards; 3) Refunds may be more difficult; 4) Exchange rates may change at renewal; 5) Platforms may restrict cross-region activity. We recommend understanding these risks before proceeding.
Where does SubPrice AI get its price data?
SubPrice AI's price data comes from public App Store pages across regions. We use automated scrapers to fetch subscription prices from 20 App Store regions daily, with real-time exchange rates from Frankfurter API for conversions. All prices are tax-inclusive App Store listed prices.