AudioCardio is a mobile app that is designed to protect and strengthen your hearing by listening to a personalized and inaudible (or barely audible) sound therapy. The AudioCardio™ app allows you to assess your hearing and generate a personalized sound therapy known as Threshold Sound Conditioning.


Threshold Sound Conditioning allows you to check your hearing and create a personalized sound therapy that stimulates the cells at the barely audible level.


Threshold Sound Conditioning stimulates the cells inside the ear in hopes of helping them connect to nearby cells to form pathways. These cells help send sound signals through the auditory pathway until they reach the part of the brain where this stimulation is interpreted as meaningful sound.


After doing this consistently, these pathways become easier to find and take so that these types of stimulation reach their destination to get processed as sound.

Hearing loss isn’t just an inconvenience. Untreated hearing loss has been closely associated with secondary physical and mental health issues ranging from an increased risk of falling to dementia. AudioCardio is an easily accessible and affordable sound therapy that aims to protect and strengthen your hearing anytime, anywhere.

Use AudioCardio™ daily for one hour for best results. You can think of it like exercise. One hour per day is best, but some exercise is better than none.

AudioCardio™ measures your threshold of sound based on the devices being used (earbuds / headphones) to deliver a custom sound therapy and sound experience. The assessment acts like a calibration for your personalized sound therapy.

  1. Connect your headphones.
  2. Go to a very quiet room away from windows and electronics that give off ambient noise.
  3. Move the volume slider up to where you can noticeably hear the sound.
  4. Then bring the volume slider down to the point where you can barely hear it (barely audible level) and set it there.
  5. Set the slider at the barely audible level and press next. Do this five times for each ear.

This means that the sound being played during the assessment is just at the cusp of your hearing. The tone being played in the assessment will be completely inaudible and disappear if you were to lower it by 1 dBr. That is your barely audible level (cusp of sound).

The hardware volume must be set at 60%. Changing the hardware volume will make the sound therapy ineffective. Please set the slider to the maximum level if you cannot hear any sound for a particular frequency range.

Retake your assessment whenever you change your earbuds, mobile device, anytime your AudioCardio sound therapy can easily be heard or at least once a week. Your sound therapy should always be barely audible (or inaudible) when activated. Remember to always do your assessments in a quiet room to ensure that the Threshold Sound Conditioning is calibrated correctly.

Each slider represents a range of frequencies. These ranges are key frequencies for speech, communication and music. Move them up and down to the barely audible level to personalize your sound therapy.

This score represents great to below average hearing. The higher your score, the better (0-10 scale).

You may use AudioCardio if you have tinnitus. However, tinnitus affects everyone differently. Make sure the sound therapy is comfortable for your unique condition.


If you sense that you are feeling any discomfort, please discontinue use.

Yes, headphones or earbuds are required while doing the assessment and while you receive your sound therapy. Be sure to use the EXACT SAME headphones for both the assessment and sound therapy.

Any set is compatible as long as you use the same earbuds or headphones for your assessment and your sound therapy. Be sure to reassess your settings any time you change your hardware (earbuds, headphones, phone, tablet).

Yes, you may use AudioCardio with your hearing aids. However, always be sure that you use the EXACT SAME settings for your assessments and sound therapy. If you decide to switch to headphones or earbuds, you’ll need to retake the assessment again so that the app can calibrate to those earbuds or headphones.

Listening to music with your sound therapy is completely optional. You can find a list of supported services on the settings page within the AudioCardio app. Check back periodically for updated services.

You should only adjust the volume control within the AudioCardio™ app (on the music player screen). Your device (phone/tablet) volume must always remain at 60% for your assessment and sound therapy.

Yes, many people activate the AudioCardio sound therapy as part of their nightly routine. The AudioCardio sound therapy automatically turns off after 60 minutes of use and is barely audible (if at all), so it will not disrupt your sleep.

Canceling your Subscription from our website: 

1. Log into your account from a desktop or mobile browser (not the mobile app).

2. Click on the Welcome tab on the top right corner.

3. Click on Subscriptions.

4. Find your plan and click Cancel.


Canceling your Subscription via Apple App Store:

1. Open the Settings app.

2. Tap on Your Apple ID.

3. Tap on “Subscriptions.”

4. Select the AudioCardio subscription.

5. Tap “Cancel Subscription” to disable it from auto-renewing at the end of the current billing cycle.


Canceling your Subscription via Google Play Store:

1. Open the Google Play Store app.

2. Tap Menu (3 small horizontal lines, upper left corner)

3. Tap Subscriptions.

4. Select the subscription you want to cancel.

5. Tap Cancel Subscription.

6. Follow the onscreen instructions.

You can email us at support@audiocardio.com


Start strengthening your hearing today!

Download the AudioCardio App on the Apple App Store or Google Play Store!