---
title: "HRV4Training - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "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 performanc"
---

# HRV4Training — United States

![HRV4Training App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/f1/ed/a9/f1eda929-f16c-ae2f-ce1d-08a4b215b667/AppIcon-0-0-1x_U007ephone-0-8-0-85-220.png/434x0w.png)

**Developer:** [A.S.M.A](https://apptail.io/developer/asma-OgS)
**Category:** Health Fitness
**Rating:** 3.6/5 (288 ratings)
**Price:** Free
**Bundle ID:** HRV4Training
**Store:** Apple App Store
**Country:** United States
**Version:** 8.6.3 (released 2026-05-25)
**Original Release:** 2013-08-14
**Languages:** English, Italian, Spanish

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id686923970)
**AppTail Page:** [https://apptail.io/app/hrv4training-VoQ/united-states](https://apptail.io/app/hrv4training-VoQ/united-states)

## HRV4Training Description
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: 

## HRV4Training Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/d7/ff/86/d7ff860f-82ef-0dc4-e4ac-e77214718410/85f6c59f-578a-4959-9ef3-3d9bb1aa99fb_6.5-inch_Screenshot_1.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/de/7e/63/de7e6337-b53f-33b9-3a4b-c78af0b49f06/e22a7f75-25ec-4464-aedc-a719789ca43a_6.5-inch_Screenshot_2.png/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/db/71/e5/db71e5f2-335b-10c7-728a-262da46c51e4/722cf995-8ec2-489e-8809-d0957e45d48f_6.5-inch_Screenshot_3.png/1242x2688.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/a4/a0/92/a4a09214-f202-8a3b-1f14-84ebc1bb6006/e50ad6f8-7791-4885-9bd9-9800433d7aa2_6.5-inch_Screenshot_4.png/1242x2688.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/d3/9c/40/d39c40b4-dfa4-cbbe-ba7c-155df8cf75e7/8e0e9b89-fb5d-41d8-a545-8b8eef82288c_6.5-inch_Screenshot_5.png/1242x2688.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/38/79/a4/3879a473-e03d-c0cd-9d6f-bb33267eb6fd/05abfe40-30c5-47a7-a742-8f929de1c00e_6.5-inch_Screenshot_6.png/1242x2688.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource116/v4/f9/94/19/f994196e-b2e0-780d-4626-c6d847beca10/bf9f50f8-4045-4dc8-9c53-29d400b06aee_6.5-inch_Screenshot_7.png/1242x2688.png)
- [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource116/v4/54/1b/39/541b39ac-c4e8-03b1-d5b6-abe687232ef4/a3bac4cf-480f-4bc1-897d-b94e2e8e697a_6.5-inch_Screenshot_8.png/1242x2688.png)
- [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource116/v4/8a/3e/87/8a3e8784-7797-0150-17e7-33b079b8f4a9/c5adb5bb-6096-4087-9c9a-52411bc1084e_6.5-inch_Screenshot_9.png/1242x2688.png)

## HRV4Training Rating Breakdown in United States
- 5 stars: 149 (52%)
- 4 stars: 30 (10%)
- 3 stars: 16 (6%)
- 2 stars: 34 (12%)
- 1 stars: 59 (20%)

## HRV4Training Reviews in United States

### *---- "Terrible experience"
This app can’t even find my polar h10. Do not purchase.
-- Avilang, 2024-11-01

### ***** "I Do Not Get my VO2 Max Score Anymore"
I have an Oura ring and it is synced to your HRV app. I am no longer getting VO2MAX scores as calculated by your app. For years I did but am no longer getting the calculation. Help
-- M........t.........y, 2024-10-25

### *---- "Stopped working"
As of 4 days ago, I am no longer able to connect to oura to pull my metrics or push to training peaks.
-- Jrbsnxfjjsjzbsb, 2024-09-12

### ***** "Great HRV App"
I’ve used it every day for the better part of a year now first thing in the morning and I have no complaints. I was leery of the claim that the phone camera would give the same quality data as a HR chest strap but I’ve done a bunch of comparisons and yeah they give basically the same results. Which is nice because my hr strap goes on the fritz sometimes. 

It’s worth the money and it’s not a subscription thank god.
-- ConcernedCitizen1234567898765, 2024-07-07

### *---- "Inconsistent"
Doesn’t work. Very annoying when it resets every 30 seconds (out of 60) and tells you to readjust your finger on the camera that hasn’t moved. Waste of $10. Deleted.
-- Steve the Reviewer!, 2024-06-28

### *---- "Fail"
I’ve used this app for years and it continues to decline. At the last update it stopped syncing to Aura ring, and now it refuses to sync to Apple health also. I’ve emailed and they offer useful assistance. Time to change to a different app.
-- Longcor3, 2024-04-22

### ***** "Functional to the Max"
I’ve been taking HRV since 2013 and moving to HRV4Training when it first came out. It does what it’s designed to do and does it well.
-- SolarKitty, 2024-04-17

### **--- "Not what I was expecting"
I wanted this app to sync the raw HRV data read from Oura into TrainingPeaks. It doesn’t actually send the raw HRV number instead it’s sending a score which is not HRV.
-- AE2023, 2024-04-17

### ****- "Almost Perfect"
I use this app to record my resting heart rate and HRV every morning, and it's been reliable over the years. However, a few minor bugs stop me from giving it a 5-star rating. Fortunately, they don't affect the accuracy of the readings.

I'll up my rating when these issues are fixed:
1) Vibration setting only vibrates at the end of a reading, not at the start.
2) Runs in fullscreen mode, hiding status bar items like time, battery, and Dynamic Island activity.
3) Start and end sleep time controls don't respect the device's time format setting (24-hour vs. AM/PM).
-- Bikrrr, 2024-04-10

### **--- "Used to be amazing"
I had been using this for three years successfully. For more than a month, the app says it has my OuraRing data but there is no display. Reached out to support and no reply. Is this app still supported? Disappointed because as an athlete, this is one of the only HRV apps that didn’t tell me that I was pushing myself too hard every day rather than most that are for general fitness.
-- NatMD, 2024-03-18

[View all HRV4Training reviews and detailed analytics on AppTail](https://apptail.io/account/signup?utm_campaign=ai-crawl&utm_content=reviews)


## HRV4Training Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Paid | Greece | Health Fitness | #1 |
| Top Paid | Peru | Health Fitness | #1 |
| Top Paid | Finland | Health Fitness | #2 |
| Top Paid | Peru | Overall | #4 |
| Top Paid | India | Health Fitness | #6 |
| Top Paid | Australia | Health Fitness | #6 |
| Top Paid | France | Health Fitness | #7 |
| Top Paid | Austria | Health Fitness | #8 |
| Top Paid | Italy | Health Fitness | #9 |
| Top Paid | Brazil | Health Fitness | #10 |
| Top Paid | Canada | Health Fitness | #10 |
| Top Paid | Switzerland | Health Fitness | #10 |
| Top Paid | United Kingdom | Health Fitness | #11 |
| Top Paid | Ireland | Health Fitness | #11 |
| Top Paid | Ecuador | Health Fitness | #11 |
| Top Paid | Singapore | Health Fitness | #12 |
| Top Paid | Colombia | Health Fitness | #14 |
| Top Paid | Germany | Health Fitness | #18 |
| Top Paid | Spain | Health Fitness | #19 |
| Top Paid | Argentina | Health Fitness | #20 |
| Top Paid | Portugal | Health Fitness | #21 |
| Top Paid | Norway | Health Fitness | #21 |
| Top Paid | Czechia | Health Fitness | #24 |
| Top Paid | South Africa | Health Fitness | #24 |
| Top Paid | Chile | Health Fitness | #25 |
| Top Paid | Poland | Health Fitness | #25 |
| Top Paid | United States | Health Fitness | #25 |
| Top Paid | Denmark | Health Fitness | #25 |
| Top Paid | Sweden | Health Fitness | #25 |
| Top Paid | Ukraine | Health Fitness | #27 |
| Top Paid | Philippines | Health Fitness | #27 |
| Top Paid | Japan | Health Fitness | #29 |
| Top Paid | Egypt | Health Fitness | #29 |
| Top Paid | New Zealand | Health Fitness | #29 |
| Top Paid | Hungary | Health Fitness | #30 |
| Top Paid | Belgium | Health Fitness | #31 |
| Top Paid | Romania | Health Fitness | #32 |
| Top Paid | Dominican Republic | Health Fitness | #32 |
| Top Paid | Greece | Overall | #33 |
| Top Paid | United Arab Emirates | Health Fitness | #33 |
| Top Paid | Finland | Overall | #34 |
| Top Paid | Hong Kong SAR China | Health Fitness | #35 |
| Top Paid | Israel | Health Fitness | #40 |
| Top Paid | Australia | Overall | #40 |
| Top Paid | China | Health Fitness | #43 |
| Top Grossing | Peru | Health Fitness | #45 |
| Top Paid | Pakistan | Health Fitness | #45 |
| Top Paid | Mexico | Health Fitness | #45 |
| Top Paid | Kazakhstan | Health Fitness | #45 |
| Top Paid | Vietnam | Health Fitness | #49 |
| Top Paid | Malaysia | Health Fitness | #50 |
| Top Paid | Belarus | Health Fitness | #52 |
| Top Paid | Taiwan | Health Fitness | #54 |
| Top Paid | Thailand | Health Fitness | #56 |
| Top Paid | Saudi Arabia | Health Fitness | #58 |
| Top Paid | Netherlands | Health Fitness | #59 |
| Top Paid | Indonesia | Health Fitness | #61 |
| Top Paid | Türkiye | Health Fitness | #67 |
| Top Paid | South Korea | Health Fitness | #68 |
| Top Paid | Kuwait | Health Fitness | #69 |
| Top Paid | Algeria | Health Fitness | #70 |
| Top Paid | Italy | Overall | #87 |
| Top Paid | India | Overall | #88 |
| Top Paid | Russia | Health Fitness | #92 |
| Top Paid | Lebanon | Health Fitness | #94 |
| Top Paid | Austria | Overall | #98 |
| Top Paid | Canada | Overall | #100 |
| Top Paid | Ireland | Overall | #122 |
| Top Paid | Switzerland | Overall | #138 |
| Top Paid | United Kingdom | Overall | #140 |
| Top Paid | Singapore | Overall | #141 |
| Top Paid | Nigeria | Health Fitness | #152 |
| Top Paid | France | Overall | #164 |
| Top Paid | Brazil | Overall | #167 |
| Top Paid | Ecuador | Overall | #188 |
| Top Paid | Denmark | Overall | #217 |
| Top Paid | Colombia | Overall | #228 |

## HRV4Training Discovered Keywords
- hrv
- elite hrv
- optimal hrv
- kubios hrv daily readiness
- hrv4training
- heart rate variability
- fitness v4
- vo2max calculator
- sports - hrv
- apple watch stress

## Apps Similar to HRV4Training
- [Elite HRV: Wellness & Fitness](https://apptail.io/app/elite-hrv-wellness-fitness-sUe/united-states)
- [HealthFit](https://apptail.io/app/healthfit-fml/united-states)
- [Kubios HRV - Daily Readiness](https://apptail.io/app/kubios-hrv-daily-readiness-zOr/united-states)
- [Training Today](https://apptail.io/app/training-today-SYu/united-states)
- [CORE Thermal Sensor](https://apptail.io/app/core-thermal-sensor-dQv/united-states)
- [TrainerRoad](https://apptail.io/app/trainerroad-XKH/united-states)
- [The Breakaway Cycling Training](https://apptail.io/app/the-breakaway-cycling-training-ldQ/united-states)
- [FORM Swim](https://apptail.io/app/form-swim-srQ/united-states)
- [Favero Assioma](https://apptail.io/app/favero-assioma-VbS/united-states)
- [Morpheus Training](https://apptail.io/app/morpheus-training-vAsb/united-states)

## HRV4Training Available In
- [United States](https://apptail.io/app/hrv4training-VoQ/united-states)
- [Italy](https://apptail.io/app/hrv4training-VoQ/italy)
- [United Kingdom](https://apptail.io/app/hrv4training-VoQ/united-kingdom)
- [Germany](https://apptail.io/app/hrv4training-VoQ/germany)
- [Spain](https://apptail.io/app/hrv4training-VoQ/spain)
- [Canada](https://apptail.io/app/hrv4training-VoQ/canada)
- [Australia](https://apptail.io/app/hrv4training-VoQ/australia)
- [Netherlands](https://apptail.io/app/hrv4training-VoQ/netherlands)
- [France](https://apptail.io/app/hrv4training-VoQ/france)
- [Switzerland](https://apptail.io/app/hrv4training-VoQ/switzerland)
- [Brazil](https://apptail.io/app/hrv4training-VoQ/brazil)
- [Finland](https://apptail.io/app/hrv4training-VoQ/finland)
- [Sweden](https://apptail.io/app/hrv4training-VoQ/sweden)
- [Poland](https://apptail.io/app/hrv4training-VoQ/poland)
- [South Africa](https://apptail.io/app/hrv4training-VoQ/south-africa)
- [China](https://apptail.io/app/hrv4training-VoQ/china)
- [Austria](https://apptail.io/app/hrv4training-VoQ/austria)
- [Czechia](https://apptail.io/app/hrv4training-VoQ/czechia)
- [Norway](https://apptail.io/app/hrv4training-VoQ/norway)
- [Belgium](https://apptail.io/app/hrv4training-VoQ/belgium)
- [Russia](https://apptail.io/app/hrv4training-VoQ/russia)
- [Ireland](https://apptail.io/app/hrv4training-VoQ/ireland)
- [India](https://apptail.io/app/hrv4training-VoQ/india)
- [Singapore](https://apptail.io/app/hrv4training-VoQ/singapore)
- [Portugal](https://apptail.io/app/hrv4training-VoQ/portugal)
- [New Zealand](https://apptail.io/app/hrv4training-VoQ/new-zealand)
- [Chile](https://apptail.io/app/hrv4training-VoQ/chile)
- [Ukraine](https://apptail.io/app/hrv4training-VoQ/ukraine)
- [Greece](https://apptail.io/app/hrv4training-VoQ/greece)
- [Taiwan](https://apptail.io/app/hrv4training-VoQ/taiwan)
- [Hong Kong SAR China](https://apptail.io/app/hrv4training-VoQ/hong-kong)
- [Hungary](https://apptail.io/app/hrv4training-VoQ/hungary)
- [Slovakia](https://apptail.io/app/hrv4training-VoQ/slovakia)
- [Denmark](https://apptail.io/app/hrv4training-VoQ/denmark)
- [Romania](https://apptail.io/app/hrv4training-VoQ/romania)
- [Colombia](https://apptail.io/app/hrv4training-VoQ/colombia)
- [Argentina](https://apptail.io/app/hrv4training-VoQ/argentina)
- [Mexico](https://apptail.io/app/hrv4training-VoQ/mexico)
- [Türkiye](https://apptail.io/app/hrv4training-VoQ/turkey)
- [Malaysia](https://apptail.io/app/hrv4training-VoQ/malaysia)
- [Japan](https://apptail.io/app/hrv4training-VoQ/japan)
- [Ecuador](https://apptail.io/app/hrv4training-VoQ/ecuador)
- [Israel](https://apptail.io/app/hrv4training-VoQ/israel)
- [United Arab Emirates](https://apptail.io/app/hrv4training-VoQ/united-arab-emirates)
- [South Korea](https://apptail.io/app/hrv4training-VoQ/south-korea)
- [Slovenia](https://apptail.io/app/hrv4training-VoQ/slovenia)
- [Thailand](https://apptail.io/app/hrv4training-VoQ/thailand)
- [Egypt](https://apptail.io/app/hrv4training-VoQ/egypt)
- [Croatia](https://apptail.io/app/hrv4training-VoQ/croatia)
- [Armenia](https://apptail.io/app/hrv4training-VoQ/armenia)
- [Luxembourg](https://apptail.io/app/hrv4training-VoQ/luxembourg)
- [Bulgaria](https://apptail.io/app/hrv4training-VoQ/bulgaria)
- [Sri Lanka](https://apptail.io/app/hrv4training-VoQ/sri-lanka)
- [Malta](https://apptail.io/app/hrv4training-VoQ/malta)
- [Lithuania](https://apptail.io/app/hrv4training-VoQ/lithuania)
- [Uruguay](https://apptail.io/app/hrv4training-VoQ/uruguay)
- [Estonia](https://apptail.io/app/hrv4training-VoQ/estonia)
- [Iceland](https://apptail.io/app/hrv4training-VoQ/iceland)
- [Vietnam](https://apptail.io/app/hrv4training-VoQ/vietnam)
- [Nepal](https://apptail.io/app/hrv4training-VoQ/nepal)
- [Oman](https://apptail.io/app/hrv4training-VoQ/oman)
- [Panama](https://apptail.io/app/hrv4training-VoQ/panama)
- [Peru](https://apptail.io/app/hrv4training-VoQ/peru)
- [Philippines](https://apptail.io/app/hrv4training-VoQ/philippines)
- [Pakistan](https://apptail.io/app/hrv4training-VoQ/pakistan)
- [Algeria](https://apptail.io/app/hrv4training-VoQ/algeria)
- [Qatar](https://apptail.io/app/hrv4training-VoQ/qatar)
- [Dominican Republic](https://apptail.io/app/hrv4training-VoQ/dominican-republic)
- [Cyprus](https://apptail.io/app/hrv4training-VoQ/cyprus)
- [Saudi Arabia](https://apptail.io/app/hrv4training-VoQ/saudi-arabia)
- [Belarus](https://apptail.io/app/hrv4training-VoQ/belarus)
- [Brunei](https://apptail.io/app/hrv4training-VoQ/brunei)
- [Bahrain](https://apptail.io/app/hrv4training-VoQ/bahrain)
- [Suriname](https://apptail.io/app/hrv4training-VoQ/suriname)
- [Tunisia](https://apptail.io/app/hrv4training-VoQ/tunisia)
- [Barbados](https://apptail.io/app/hrv4training-VoQ/barbados)
- [Azerbaijan](https://apptail.io/app/hrv4training-VoQ/azerbaijan)
- [Angola](https://apptail.io/app/hrv4training-VoQ/angola)
- [Jordan](https://apptail.io/app/hrv4training-VoQ/jordan)
- [Uzbekistan](https://apptail.io/app/hrv4training-VoQ/uzbekistan)
- [Kenya](https://apptail.io/app/hrv4training-VoQ/kenya)
- [Kuwait](https://apptail.io/app/hrv4training-VoQ/kuwait)
- [Kazakhstan](https://apptail.io/app/hrv4training-VoQ/kazakhstan)
- [Lebanon](https://apptail.io/app/hrv4training-VoQ/lebanon)
- [Latvia](https://apptail.io/app/hrv4training-VoQ/latvia)
- [Madagascar](https://apptail.io/app/hrv4training-VoQ/madagascar)
- [North Macedonia](https://apptail.io/app/hrv4training-VoQ/north-macedonia)
- [Macao SAR China](https://apptail.io/app/hrv4training-VoQ/macau)
- [Indonesia](https://apptail.io/app/hrv4training-VoQ/indonesia)
- [Nigeria](https://apptail.io/app/hrv4training-VoQ/nigeria)
- [Honduras](https://apptail.io/app/hrv4training-VoQ/honduras)
- [Grenada](https://apptail.io/app/hrv4training-VoQ/grenada)

---

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