HRV Lite by CardioMood

HRV Lite by CardioMood Free App

Rated 3.24/5 (49) —  Free Android application by Anton Danshin (


About HRV Lite by CardioMood

CardioMood provides a scientific approach to your heart rate variability analysis.

With HRV Lite you will be able to:
✓ Take measurements of your HRV with unlimited durations
✓ Estimate your average stress level (Bayevsky Stress Index)
✓ Calculate time-domain HRV parameters (mRR, SDNN, RMSSD, pNN50)
✓ Detect and eliminate ectopic beats
✓ Sync with the CardioMood cloud at

We also calculate 20*log RMSSD, which is a popular metric for HRV used in many apps, such as ithlete, SelfLoops, Bioforce HRV, Lepo and others. Just as in other apps we call it "HRV score".

Do even more on the website:

We will be glad if you support our project by purchasing Expert HRV (an expert app for HRV analysis).

We hope you will like our effort and leave us a positive feedback! :)

Requirements and limitations

* At this moment we only support Bluetooth 4.0 Low Energy (aka Bluetooth SMART).
* Your phone must have Android 4.3 or higher.
* Even though we support recording with unlimited duration, you should avoid very long measurements.
* To avoid problems with cloud syncing, the time and time zone should be set correctly

If your device is not supported, don't give up and don't give us negative review.
Feel free to report a bug, or request a new feature via

Free CardioMood Account

In order to use the app you will need to create a free CardioMood account. We do not distribute spam and everything is for research purposes only! We provide it for free to get more feedback, so that the algorithms can be improved. If you do not trust us, simply specify a fake name. :)


Our heart is controlled by autonomic nervous system, so heart rhythm reflects its state. By analyzing beat-to-beat variability (also known as HRV), we can easily estimate the ratio of activities of sympathetic and parasympathetic nervous systems.

Our body reacts to stress by increasing sympathetic tone. When we are stressed, our heart rhythm tends to be more stable resulting in a low variability. In contrast, a relaxed state is usually associated with high HRV.

Here is how you can evaluate your stress level:
1. Wear your heart rate monitor and relax (sit in the chair or lie down)
2. Set the measurement limit to be 2 min.
3. Establish connection with your heart rate monitor
5. See your heart rate graph with average stress level after 2 minutes

If you see artifacts or ectopic beats, try to eliminate them or adjust heart rate monitor to ensure good connection and repeat the procedure.

We estimate stress level using standard algorithm developed by a soviet physiologist R.M.Bayevsky. Normal range for stress index is 40 – 150. Values above 150 is considered to be associated with stressed condition. Values below 40 are often associated with sleep (it is like that for example if you stay awake too long).

Even though there are standards for HRV, all estimated parameters and normal ranges can be individual. Only a trained physician can correctly interpret the recording, with respect to your individual features and medical history.

Contact us:

Official web-site:



Stay healthy and fit with !

How to Download / Install

Download and install HRV Lite by CardioMood version 2.5.4-lite on your Android device!
Downloaded 10,000+ times, content rating: Everyone
Android package:, download HRV Lite by CardioMood.apk

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Android app

App History & Updates

What's Changed
Fixed crash and added password recovery feature.
More downloads  HRV Lite by CardioMood reached 10 000 - 50 000 downloads
Version update HRV Lite by CardioMood was updated to version 2.5.4-lite
Version update HRV Lite by CardioMood was updated to version 2.4.0_fix-lite
Version update HRV Lite by CardioMood was updated to version 2.3.2-lite

What are users saying about HRV Lite by CardioMood

by B####:

Здравствуйте, хочу приобрести ваш продукт, но смущает отсутствие поддержки ANT+ протокола. Дело в том, что кардиоремешки от Polar H7, H10, Wahoo TICKR, Zephyr и любые другие BlueTooth ремешки как миниум все очень ненадежны изначально даже в рабочем состоянии (как минимум отстают показания на 1-2 секунды от ANT+ ремней от Гармин) и как максимум в 50% имеют брак, т.е. вообще перестают работать или сразу же или через пол года использования. С тех пор доверяю только ремням Garmin на ANT+ протоколе. Когда реализуете этот протокол?

by U####:

Where are the instructions ? How do i read my results? What is the stress number and hrv number?

by U####:

Dear Cardio mood, please tell me your app can connect with red mi 1s band ?

by Y####:

I had just decided to buy the expert version of HRV, because the lite version promised so much potential. HOWEVER, the "star" button near the top right of the screen freezes the app on my GS4. I've tried it several times, with reboots. I think the star is to go to some website, perhaps even to google play to write a review. BUT, it freezes the app with a black screen, and no functions on the phone work except double tapping the physical button to get Samsung Voice....then you can forcefully terminate the app under GS4 Settings ... Then you can use your phone again.

by Y####:

Works great

by K####:

App can connect to the HRM but that's about it. Recording time limit didn't work. No local data storage, so when the server couldn't connect (which was always) I couldn't store and view any data. Don't waste your time.

by M####:

Lite version doesn't do much but tell you what's in the premium

by I####:

Got RR ms . Is awesome.

by L####:

It's off to a good start. UI is pretty good (upload status doesn't need to be interruptive though). Some inconsistent results or weird behaviour also; history screen shows a stress value of 134 but it's 55 when opened. Are the results adaptive to a certain baseline like ithletes helpful color codings?

by M####:

Seriously, no 'forgotten password' option?? How am I supposed to retrieve it? Otherwise is perfect. But please, let me use the app without creating a new account.

by Q####:

i really like this apps , it helps in physical training and exercise

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Rating Distribution

49 users