This app captures and displays bodily sounds using the built-in microphone of your device.

The sound signal is displayed both in time domain and in frequency domain in real time.

There is a list of previously recorded hearth sounds that you can play, listen and visualize using the spectrogram and time domain graphical interface. Improve your knowledge and skill at identifying various conditions.

You can also visualize your own heart waveform. You can record, playback and share your own sound files with your friends.

There is a heart sound simulator by which you create various conditions. Different types of murmur, click sounds, lung sounds etc.

The captured sound is processed and filtered for best visual and audio experience. You can also control filter parameters live. The spectrogram of the sound is also displayed in real time.

Using with Airpods:
* Put on your airpods
* Press the microphone at the bottom of your device to your chest.
* Place the microphone directly against the skin, a good spot is the apex of your heart just below your left nipple.

Using with headphones:
* Press the mute button on the app interface to stop microphone feedback.
* Press the microphone at the bottom of your device to your chest.
* Place the microphone directly against the skin, a good spot is the apex of your heart just below your left nipple.
* Start recording.
* Go to playback mode and listen to your own heart beat using your HEADPHONES.

This program is not meant for diagnosis of any medical condition. The data provided can be inaccurate and should only be used for entertainment purposes. This app records and playbacks recorded sound just like any other sound recording app. The quality or validity of the recorded sound is strictly limited to the performance of the built in microphone.

This app offers premium membership. By subscribing you will get:
* Access the full library
* Access frequency domain views.
* Able to save more than one recording.

Subscription with a free trial period will automatically renew to a paid subscription unless auto-renewal is turned off. Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost for the renewal. Subscriptions may be managed by the user and auto-renewal may be turned off going to the users Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when purchasing a premium subscription during the free trial period. Check out the privacy policy( and terms of use (

What’s New

Version 2.2

Bluetooth support updated.

Ratings and Reviews

4.0 out of 5
108 Ratings

108 Ratings

Nepatango ,

Concise and useful heart sound simulator function

There is no other app with such a flexible simulator function. It lets you add and remove abnormal sounds individually and is very helpful when teaching medical students.

xaminmo ,

All clicks, all the time

Something with the filter algorithm, this plays a 2 Hz click all the time, whether it’s playback, or monitoring. No adjustments seem to help. The click sounds are about double the amplitude of any signal, except a few mitral samples which cannot be heard at all over the clicks. None of my other audio apps do this. It seems like an overly aggressive audio filter that turned into 1ms square waves. Anyway, it made it completely unusable, and painful on the earpiece to even try.

Luca Wolfe ,

Utter Garbage

This app used to be great and FREE now it’s not only broken do to this unbearable clicking throughout the entire app regardless of what settings you choose but now they expect you to PAY for this broken mess if you want to record more than once. Don’t waste your time with this trash there are plenty better apps out there they don’t force you to pay to use their broken app.


Emre Turgay
109.3 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Arabic, French, German, Greek, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese, Turkish

Age Rating
Infrequent/Mild Medical/Treatment Information
In-App Purchases
  1. Enable all features (weekly) $2.49
  2. Enable all features (monthly) $9.49
  3. Enable all features (yearly) $59.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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