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3M™ Littmann® SoundBuilder

By 3M Company

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The 3M™ Littmann® SoundBuilder App is a learning tool designed to help improve the auscultation skills of students and practicing clinicians. There are 14 unique lessons - based upon key heart sounds - that combine text, a virtual mannequin, 3D cardiac animation and dynamic waveforms.

This tool is intended for educational purposes only. It is not intended for diagnostic purposes.

What's New in Version 1.01

Now available - looping heart sounds in all portions of the app, even the 3D animation, for a better learning experience.


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Customer Reviews

Needs better sound quality

Littmann has done a great deed in developing this app. It provides "lessons" on diaphragm/bell positioning and heart sounds, but it fails in sound quality. On both iPad and iPhone with the volume high, you can barely make out the heart sounds it produces. This is even with placing the speaker directly next to your external canal.
I would love to use this more as a mobile teaching model, so that students may hear what I am trying to explain when a patients with similar conditions are not available. Littmann's only suggestion is to wear headphones, which is not always practical.

Need for headphones

Several commenters complain about the need for headphones to hear the sounds. Heart sounds are low frequency; the first and second heart sounds are around 100 hz. Murmurs are somewhat higher. The tiny speakers in iphones and ipads are not capable of playing those sounds with any volume.

If you want to use this app in a lecture hall it can be done by buying a pair of powered speakers. They can be had for as little as $100 and are capable of filling an average sized lecture hall with sound.


This is an amazing app. It is really organized and very helpful to me as a medical student.

The only disadvantage this app has is that the volume of the sounds is a bit low, I had to stick my ear to the iPad speaker to listen to some of the sounds.

Anyway, this app definitely deserves five stars

3M™ Littmann® SoundBuilder
View in iTunes
This app is designed for both iPhone and iPad
  • Free
  • Category: Medical
  • Updated:
  • Version: 1.01
  • Size: 105 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 3.2 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

Current Version:
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