DAF Assistant

Listed in: Speech/language problems  Stuttering  
DAF Assistant

Available on:

(click to download)

Supported languages:



Android: £3.15 [approximately €4.45, $4.89], Apple: £7.99 [approximately €11.29, $12.39]

Helps people who have a stuttering problem to speak more fluently.

Approved by



Countries of use

Any in which the user is familiar with English


Android: £3.15 [approximately €4.45, $4.89], Apple: £7.99 [approximately €11.29, $12.39]


Artefact LLC, USA
(Based in United States)


Same as technical developer

Medical Adviser

Same as technical developer


Improving communication Improving communication
Support to deal with symptoms/disabilities Support to deal with symptoms/disabilities


Helps people who have a stuttering problem to speak more fluently.

Tags: Disability


Reviewer: Central Coast Children's Foundation (CCCF), USA
Review: "This app is meant for people who stutter. It uses delayed auditory feedback (DAF) and frequency-shifting auditory feedback (FAF) to help speakers control their speech fluency, pitch and rate – with the goal of improving confidence and speech skills. DAF delays the voice, while FAF changes the pitch. While the app cannot yet be used for phone calls, it can be used with Bluetooth or the Apple earphones with remote and microphone." 
Source: http://bit.ly/18Rz4cU
Usage: Not specified
Weblink of reviewer: http://bit.ly/GZprfk
Reviewer: Blogger, Stuttering Student, USA
Review: "The app does work for me. When I placed the earbuds into my ears and launched the device, I immediately was able to speak freely to a friend of mine with hardly any stammering or blocks. It was a tremendous feeling, and I kept talking nonstop for about 5 minutes. The small blocks I did have were almost inconsequential, and I was able to get past them almost by sheer will. My settings are 'delay of 140' and 'frequency shift of +3'. I tried a few others, and they worked nearly as well, so I can't say for sure which works the best."
Source: http://bit.ly/148cCDG
Usage: Not specified
Weblink of reviewer: http://stutteringstudent.blogspot.co.uk
Reviewer: Autism Queensland, Australia
Review: "DAF Assistant aids in implementing delayed auditory feedback (DAF) and frequency_shifting auditory feedback (FAF) techniques known to help people with stuttering to speak more fluently." (See Page 5 on weblink) 
Source: http://bit.ly/1bewBH3
Usage: Not specified
Weblink of reviewer: http://bit.ly/16e1gk6
Reviewer: British Stammering Association (BSA), UK
Review: Recommended by the British Stammering Association (BSA)
Source: http://bit.ly/PG7yVH
Usage: Not specified
Weblink of reviewer: http://bit.ly/GX1gPo

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