CardioRespiratory Monitor Free

App score: 40/100 About the Orcha review

This app uses your device's built-in sensors to measure a person's breathing and heartbeat rates.

CardioRespiratory Monitor Free app logo image

Platform: Android

Cost: In App Purchases

Download from app store

Condition(s) this app helps

  • Chest Infection
  • Cystic Fibrosis


This app uses your device's built-in sensors to measure a person's breathing and heartbeat rates. It turns your Android device into a heart monitor, useful for workout and exercise fitness regimens. It is the only app on the market that uses two different methods to measure the heartbeat rate. One method monitors chest movements. The other uses the rear camera and light to monitor blood flowing through a finger tip.With the first method, your device collects sensor readings several times each second while the device is resting on the subject's chest. The app makes use of a technology in your device called 'sensor fusion,' which combines the readings of multiple sensors to isolate such variables as linear acceleration, rotation, and gravity. The app monitors the change in angle to determine the breathing and heartbeat rates. To use this app, your device must have gyroscopes, accelerometers, and magnetometers and a version of Android that supports these technologies. If you are not sure, you can try one of the free sensor test apps in the Google Play Market and find out.When you press 'Start' on the main screen the app begins to prepare the device for the measurements (for 10 seconds). During this time, place the device on the subject's chest. Once the measurements begin, the 'Start' button changes to 'Busy.' The measurements take about 20 seconds. Once the measurements are done, the breathing and heartbeat rates (in bpm) are shown, as well as the amplitudes of each. Also shown are plots of the breathing movements and the average movement ('pulse') due to the heartbeat (as angle versus time in arbitrary units).With the second method, you place your fingertip on the device's rear camera and light for 25 seconds. The app monitors the brightness changes resulting from the changes in blood flow through your fingertip.With these two methods available in the same app, virtually any Android device can be used to measure heartbeat rate. This is also the only app that gives the user an indication of the quality of the measurements.If you find this app useful, please consider supporting us by buying the Pro version, which uses the same measurement 'engine' as this free version. If this version works well on your device, then so will the Pro version. The Pro version adds 'settings' and 'history' menu opitons. The settings screen gives you the options to save heartbeat and breathing rates to a file, 'speak' the results of the measurements, turn the 'ping' sound off or leave it on, and increase the number of 'rounds' of measurement (additional rounds do not require the prepare step). The history screen lists the values of the previous measurements since the history was last cleared. Also, the Pro version does not have ads.

  • App screenshot number 0
  • App screenshot number 1
  • App screenshot number 2
App score: 40/100

More details

Reviewed on: 16 October 2017 (Independently reviewed for us by ORCHA)

  • "Health Tracking
  • "Health Tracking
  • Wellbeing Tracking
Data Collection

The data collected about you is capable of identifying that it relates to you

The type of data that it collects isn't classified as sensitive data.

(Identifiable but not Sensitive) ' The type of information this App collects, is not sensitive but is still classed as identifiable data, relating to you and so could poses a risk in terms of your privacy and confidentiality. It is still therefore important that the publisher is clear what they do or don't do with this information.

Data Use

The App doesn't state that it won't share your data in any way with other people without your consent.

The App doesn't allow you to share information in the App with other Apps, systems, organisations or users.

Data Security

The App doesn't encrypt the information it collects to make it safe from other people as it is transferred from the App.

The App doesn't encrypt the information it collects to make it safe from other people as it is retained by the the developer.

Professional Assurance

It wasn't clear from our review that a suitably qualified professional or organisation was involved in the Apps development.

It wasn't clear from our review how regularly the advice and guidance given by the App was reviewed and updated by relevant professionals.


It wasn't clear from our review that the App had been involved in any clinical trials or similar testing to demonstrate its 'real world' effectiveness.


It wasn't clear from our review that the App had been through end user testing as part of its design and development.


The App does provide customisable features.

End User Capacity

The App does provide support for users with poor sight.

The App doesn't provide support for users with hearing difficulties.


The App doesn't appear to have a clear approach to dealing with user issues.


The App isn't entirely free to use.

Use technology to live better with your condition

Read our Technology Guide

We use your comments to improve our information. We cannot reply to comments left on this form. If you have health concerns or need clinical advice, call our helpline on 03000 030 555 between 9am and 5pm on a weekday or email them.