Fonate DAF can help people who stutter achieve slower, more fluent speech by using Delayed Auditory Feedback.

Using a wired or bluetooth headset, you are able hear your voice with a slight delay and change in pitch as you speak.

This creates a "choral effect", which has been shown to help reduce stuttering in many people.

• Created by a speech-language pathologist
• Requires a wired or bluetooth headset.

What’s New

Version 2.2

Enhanced sound quality for Apple AirPods.

Ratings and Reviews

4.2 out of 5
6 Ratings
6 Ratings
Charly Dat Duc Lai ,

Not good enough.

At first I thought this app is good, but it turned out to be way too delayed.

Mavdouth ,

Amazing!! Truly amazing!

This was recommended for my teenager by her speech pathologist. Our son is also using it. He was overwhelmed with how the app significantly regulated the rate of his speech, and in turn, his stuttering! It was like an epiphany! I am anxious for them to try this white a Bluetooth headphone. Also, I'm very curious to know about research on long-term users grow immune to using this method? Additionally, I would pay to have this available on an Apple Watch! Using this app would be much more discreet if it could be used using the microphone on the Apple Watch. Thank you for this awesome resource!!



As a stutterer I remembered using this in some of my early speech therapy sessions. I wanted to take that machine home with me. Now I have it in the palm of my hand. Wonderful app!!!


Breathing Zone Limited
18.4 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© Fonate


  • Family Sharing

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

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