EarTrumpet is a novelty hearing application that consists of a hearing test simulator and personal sound amplification tool. This application is for entertainment purposes only.

EarTrumpet was created by Allen Foulad with the support of the Otolaryngology department at the University of California, Irvine.

The hearing test is intended for entertainment and demonstration purposes only. The information obtained from this application is not intended to be used in the diagnosis of any medical condition, including but not limited to hearing loss.

The personal sound amplifier enhances environmental sounds via the earphones attached to an iPhone, iPod, or iPad. This application is not intended to function as a hearing aid and should not be used to compensate for hearing impairment.

* A headset with a microphone is required for devices that do not have a built in microphone.
* A headset without a microphone can be used with the iPhone (all versions), iPad (all versions) and iPod (4g and newer) since these devices have a built-in microphone.
* If a headset with a microphone is used with a device that also has a built-in microphone, the microphone on the headset will automatically be used. There is no way to select to use the microphone on the device due limitations by Apple.

Sound Amplifier Features:
* Volume Boost enables intense volume amplification.
* Sound filters provide precise sound adjustment using preset and custom equalizer settings.
* Preset sound filters reduce unwanted noise and enhance common frequencies.
* Custom sound filters can be created and saved using a highly adjustable equalizer.
* Excessively loud sounds can be automatically detected and decreased.
* Volume and sound filters can be adjusted separately for the left and right ears.
* Bluetooth is not supported at this time. We are working on making this a fully supported feature.

Simulated Hearing Test Features:
* Graphical view of results.
* Text description of the results.
* Option to save and email the results.

* The personal sound amplifier does not amplify phone calls or music played through the device. It only amplifies sounds from the surrounding environment.
* Older iPhone and iPod models (ie: first generation) may produce choppy sound when using complex sound filters.
* The results from your personal hearing test cannot be used as a filter for your sound amplification.
* EarTrumpet is not a substitute for professional medical care.

If you have any difficulty with the application please email in order to obtain a prompt solution.

What's New

Version 1.2.1

Fixed volume slider problem that was caused by recent iOS update.

Ratings and Reviews

Excellent. Very close to audiologist results


I just use this for the hearing test. Of all the ones I've tried, this one comes closest to producing results very similar to the audiologist.

No Good.

Keys Doctor

The absolute worst that I have tried.

Works great with iPhone 4 and iOS 5


Terrific support and a very intriguing and well designed app. I love the hearing test feature to perhaps inform me when I need to break down and get a standard hearing aid. I don't need one yet and this app may hold it off a few years.

I havent tested it on the field yet but my killer application would be to be able to keep up with business table conversations in loud restaurants and bars. So far the only way for this app (and perhaps others) to use the iPhone body mike as input is to use it with non-miked earbuds else wise the headset mike gets used which is not as close to the speaker. However the application does work with my Bluetooth Plantronics earpiece yet again engages the earpiece mike as input. This is not what I am really after but it is intriguing that my Bluetooth is now a hearing aid of sorts for only $4. Unfortunately the Plantronics has insufficient volume for loud environments. I'm going to continue doing some experimenting with other headsets. Until then just having the hearing test feature and the automatically tuned filter it a terrific gift for those who cannot afford, or don't want expensive hearing aid equipment with lack of user control.


Praxis BioSciences, LLC
8.2 MB
Requires iOS 5.1.1 or later. Compatible with iPhone, iPad, and iPod touch.
English, German
Age Rating
Rated 12+ for the following:
Infrequent/Mild Medical/Treatment Information
© 2010 Praxis BioSciences, LLC


  • Family Sharing

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

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