About Icon

About & Pics

About Icon

Description

* The world's number 1 DAF app is used by thousands of people in over one hundred countries. *

DAF Pro is the best DAF app available for Android, has the lowest delay (latency) of all apps and also offers the choral effect.

We have measured the latency to be 20ms on Google Pixel phones but this will vary from device to device.

DAF Professional has been developed to be the leading app to help people who stutter / stammer or have Parkinson's Disease. It helps people to slow their rate of speech down which makes it sound clearer to others.

DAF Professional has been designed and tested by a certified and practicing Speech and Language Therapist (MSc, PGDip, BAHons, HPC registered and member of RCSLT). DAF Professional is the most effective and efficient Delayed Auditory Feedback (DAF) currently on the Android Market. No other app delivers the low latency required for effective use.

Delayed Auditory Feedback (DAF) is a well established speech and language therapy tool which helps people to speak more slowly. However, until recently, devices have been cumbersome to carry around, difficult to adjust, very expensive and therefore not widely used.

DAF was originally developed for people who stutter / stammer, but has since been shown to work with people with other speech difficulties, such as those with Parkinson's Disease (Downie et al., 1981; Dagenaise, Outhwood & Lee, 1998; Lowit et al., 2006 and most recentely Lowit et al., 2010).

It works by enabling someone to hear his or her speech in an altered manner. This disruption to the normal auditory feedback loop causes the speaker to slow down. Research has shown that DAF will be of benefit to approximately a third of people who have a stammer or Parkinson's. Clinical research has not been carried out as yet on other client groups. However, DAF may well be of benefit to people with other medical speech conditions.

DAF Professional is an easy to use professional speech therapy tool which could make a huge difference to you or someone you know.

If you encounter any problems then please email to support@speechtools.co and we will do our very best to help you.

Google Play Store Category:

Primary: Applications

Secondary: Medical

Google Play

Privacy Policy

Total Ratings

44
5
22
4
10
3
3
2
3
1
6

Screenshots

DAF Professional screenshot 1DAF Professional screenshot 2DAF Professional screenshot 3DAF Professional screenshot 4DAF Professional screenshot 5DAF Professional screenshot 6

Version History

Launched Jan 05, 2014 (almost 6 years ago).

Releasing new versions every 3 months, on average.

Oct 09
2019
(Current)
Version 5.3.4

Fix help crash on Lollipop

Oct 07
2019
Version 5.3.3

Bug fixes

Oct 06
2019
Version 5.2.7

Bug fixes

Sep 27
2019
Version 5.0.4

Now the lowest delay (latancy) available on any DAF app, also with choral effect.
Bug fixes.

Sep 25
2019
Version 5.0.2

Now the lowest delay (latancy) available on any DAF app, also with choral effect.

Jun 26
2019
Version 4.4.2

Mar 12
2019
Version 4.3.2

May 23
2018
Version 4.1

GDPR compliant

Nov 22
2015
Version 3.12

3.12
Fix recording permission problem on Marshmallow.

3.11
Minor fixes.

3.10
Built for Android Marshmallow.

Nov 22
2015
Version 3.11

Oct 31
2015
Version 3.10

DAF Professional has been developed to be the leading app to help people who stammer or have Parkinson's Disease. It helps people to slow their rate of speech down which makes it sound clearer to others.

DAF Professional has been designed and tested by a certified and practicing Speech and Language Therapist (MSc, PGDip, BAHons, HPC registered and member of RCSLT). DAF Professional is the most effective and efficient Delayed Auditory Feedback (DAF) currently on the Android Market. No other app delivers the low latency required for effective use.


Delayed Auditory Feedback (DAF) is a well established speech and language therapy tool which helps people to speak more slowly. However, until recently, devises have been cumbersome to carry around, difficult to adjust, very expensive and therefore not widely used.

DAF was origionally developed for people who stammer, but has since been shown to work with people with other speech difficulties, such as those with Parkinson's Disease (Downie et al., 1981; Dagenaise, Outhwood & Lee, 1998; Lowit et al., 2006 and most recentely Lowit et al., 2010).


It works by enabling someone to hear his or her speech in an altered manner. This disruption to the normal auditory feedback loop causes the speaker to slow down. Research has shown that DAF will be of benefit to approximately a third of people who have a stammer or Parkinson's. Clinical research has not been carried out as yet on other client groups. However, DAF may well be of benefit to people with other medical speech conditions.


DAF Professional is an easy to use professional speech therapy tool which could make a huge difference to you or someone you know.


DAF Professional works during phone calls on many phones as well as operating as a standalone device.


Please try our free version to see what DAF Professional can do for you!


If you encounter any problems then please email to support@speechtools.co and we will do our very best to help you.

Sep 20
2015
Version 3.9

DAF Professional has been developed to be the leading app to help people who stammer or have Parkinson's Disease. It helps people to slow their rate of speech down which makes it sound clearer to others.

DAF Professional has been designed and tested by a certified and practicing Speech and Language Therapist (MSc, PGDip, BAHons, HPC registered and member of RCSLT). DAF Professional is the most effective and efficient Delayed Auditory Feedback (DAF) currently on the Android Market. No other app delivers the low latency required for effective use.


Delayed Auditory Feedback (DAF) is a well established speech and language therapy tool which helps people to speak more slowly. However, until recently, devises have been cumbersome to carry around, difficult to adjust, very expensive and therefore not widely used.

DAF was origionally developed for people who stammer, but has since been shown to work with people with other speech difficulties, such as those with Parkinson's Disease (Downie et al., 1981; Dagenaise, Outhwood & Lee, 1998; Lowit et al., 2006 and most recentely Lowit et al., 2010).


It works by enabling someone to hear his or her speech in an altered manner. This disruption to the normal auditory feedback loop causes the speaker to slow down. Research has shown that DAF will be of benefit to approximately a third of people who have a stammer or Parkinson's. Clinical research has not been carried out as yet on other client groups. However, DAF may well be of benefit to people with other medical speech conditions.


DAF Professional is an easy to use professional speech therapy tool which could make a huge difference to you or someone you know.


DAF Professional works during phone calls on many phones as well as operating as a standalone device.


Please try our free version to see what DAF Professional can do for you!


If you encounter any problems then please email to support@speechtools.co and we will do our very best to help you.

Sep 16
2015
Version 3.8

DAF Professional has been developed to be the leading app to help people who stammer or have Parkinson's Disease. It helps people to slow their rate of speech down which makes it sound clearer to others.

DAF Professional has been designed and tested by a certified and practicing Speech and Language Therapist (MSc, PGDip, BAHons, HPC registered and member of RCSLT). DAF Professional is the most effective and efficient Delayed Auditory Feedback (DAF) currently on the Android Market. No other app delivers the low latency required for effective use.


Delayed Auditory Feedback (DAF) is a well established speech and language therapy tool which helps people to speak more slowly. However, until recently, devises have been cumbersome to carry around, difficult to adjust, very expensive and therefore not widely used.

DAF was origionally developed for people who stammer, but has since been shown to work with people with other speech difficulties, such as those with Parkinson's Disease (Downie et al., 1981; Dagenaise, Outhwood & Lee, 1998; Lowit et al., 2006 and most recentely Lowit et al., 2010).


It works by enabling someone to hear his or her speech in an altered manner. This disruption to the normal auditory feedback loop causes the speaker to slow down. Research has shown that DAF will be of benefit to approximately a third of people who have a stammer or Parkinson's. Clinical research has not been carried out as yet on other client groups. However, DAF may well be of benefit to people with other medical speech conditions.


DAF Professional is an easy to use professional speech therapy tool which could make a huge difference to you or someone you know.


DAF Professional works during phone calls on many phones as well as operating as a standalone device.


Please try our free version to see what DAF Professional can do for you!


If you encounter any problems then please email to support@speechtools.co and we will do our very best to help you.

Sep 15
2015
Version 3.7

DAF Professional has been developed to be the leading app to help people who stammer or have Parkinson's Disease. It helps people to slow their rate of speech down which makes it sound clearer to others.

DAF Professional has been designed and tested by a certified and practicing Speech and Language Therapist (MSc, PGDip, BAHons, HPC registered and member of RCSLT). DAF Professional is the most effective and efficient Delayed Auditory Feedback (DAF) currently on the Android Market. No other app delivers the low latency required for effective use.


Delayed Auditory Feedback (DAF) is a well established speech and language therapy tool which helps people to speak more slowly. However, until recently, devises have been cumbersome to carry around, difficult to adjust, very expensive and therefore not widely used.

DAF was origionally developed for people who stammer, but has since been shown to work with people with other speech difficulties, such as those with Parkinson's Disease (Downie et al., 1981; Dagenaise, Outhwood & Lee, 1998; Lowit et al., 2006 and most recentely Lowit et al., 2010).


It works by enabling someone to hear his or her speech in an altered manner. This disruption to the normal auditory feedback loop causes the speaker to slow down. Research has shown that DAF will be of benefit to approximately a third of people who have a stammer or Parkinson's. Clinical research has not been carried out as yet on other client groups. However, DAF may well be of benefit to people with other medical speech conditions.


DAF Professional is an easy to use professional speech therapy tool which could make a huge difference to you or someone you know.


DAF Professional works during phone calls on many phones as well as operating as a standalone device.


Please try our free version to see what DAF Professional can do for you!


If you encounter any problems then please email to support@speechtools.co and we will do our very best to help you.

Jul 15
2015
Version 3.6

DAF Professional has been developed to be the leading app to help people who stammer or have Parkinson's Disease. It helps people to slow their rate of speech down which makes it sound clearer to others.

DAF Professional has been designed and tested by a certified and practicing Speech and Language Therapist (MSc, PGDip, BAHons, HPC registered and member of RCSLT). DAF Professional is the most effective and efficient Delayed Auditory Feedback (DAF) currently on the Android Market. No other app delivers the low latency required for effective use.


Delayed Auditory Feedback (DAF) is a well established speech and language therapy tool which helps people to speak more slowly. However, until recently, devises have been cumbersome to carry around, difficult to adjust, very expensive and therefore not widely used.

DAF was origionally developed for people who stammer, but has since been shown to work with people with other speech difficulties, such as those with Parkinson's Disease (Downie et al., 1981; Dagenaise, Outhwood & Lee, 1998; Lowit et al., 2006 and most recentely Lowit et al., 2010).


It works by enabling someone to hear his or her speech in an altered manner. This disruption to the normal auditory feedback loop causes the speaker to slow down. Research has shown that DAF will be of benefit to approximately a third of people who have a stammer or Parkinson's. Clinical research has not been carried out as yet on other client groups. However, DAF may well be of benefit to people with other medical speech conditions.


DAF Professional is an easy to use professional speech therapy tool which could make a huge difference to you or someone you know.


DAF Professional works during phone calls on many phones as well as operating as a standalone device.


Please try our free version to see what DAF Professional can do for you!


If you encounter any problems then please email to support@speechtools.co and we will do our very best to help you.

Mar 01
2015
Version 3.4

DAF Professional has been developed to be the leading app to help people who stammer or have Parkinson's Disease. It helps people to slow their rate of speech down which makes it sound clearer to others.

DAF Professional has been designed and tested by a certified and practicing Speech and Language Therapist (MSc, PGDip, BAHons, HPC registered and member of RCSLT). DAF Professional is the most effective and efficient Delayed Auditory Feedback (DAF) currently on the Android Market. No other app delivers the low latency required for effective use.


Delayed Auditory Feedback (DAF) is a well established speech and language therapy tool which helps people to speak more slowly. However, until recently, devises have been cumbersome to carry around, difficult to adjust, very expensive and therefore not widely used.

DAF was origionally developed for people who stammer, but has since been shown to work with people with other speech difficulties, such as those with Parkinson's Disease (Downie et al., 1981; Dagenaise, Outhwood & Lee, 1998; Lowit et al., 2006 and most recentely Lowit et al., 2010).


It works by enabling someone to hear his or her speech in an altered manner. This disruption to the normal auditory feedback loop causes the speaker to slow down. Research has shown that DAF will be of benefit to approximately a third of people who have a stammer or Parkinson's. Clinical research has not been carried out as yet on other client groups. However, DAF may well be of benefit to people with other medical speech conditions.


DAF Professional is an easy to use professional speech therapy tool which could make a huge difference to you or someone you know.


DAF Professional works during phone calls on many phones as well as operating as a standalone device.


Please try our free version to see what DAF Professional can do for you!


If you encounter any problems then please email to support@speechtools.co and we will do our very best to help you.

Feb 28
2015
Version 3.3

DAF Professional has been developed to be the leading app to help people who stammer or have Parkinson's Disease. It helps people to slow their rate of speech down which makes it sound clearer to others.

DAF Professional has been designed and tested by a certified and practicing Speech and Language Therapist (MSc, PGDip, BAHons, HPC registered and member of RCSLT). DAF Professional is the most effective and efficient Delayed Auditory Feedback (DAF) currently on the Android Market. No other app delivers the low latency required for effective use.


Delayed Auditory Feedback (DAF) is a well established speech and language therapy tool which helps people to speak more slowly. However, until recently, devises have been cumbersome to carry around, difficult to adjust, very expensive and therefore not widely used.

DAF was origionally developed for people who stammer, but has since been shown to work with people with other speech difficulties, such as those with Parkinson's Disease (Downie et al., 1981; Dagenaise, Outhwood & Lee, 1998; Lowit et al., 2006 and most recentely Lowit et al., 2010).


It works by enabling someone to hear his or her speech in an altered manner. This disruption to the normal auditory feedback loop causes the speaker to slow down. Research has shown that DAF will be of benefit to approximately a third of people who have a stammer or Parkinson's. Clinical research has not been carried out as yet on other client groups. However, DAF may well be of benefit to people with other medical speech conditions.


DAF Professional is an easy to use professional speech therapy tool which could make a huge difference to you or someone you know.


DAF Professional works during phone calls on many phones as well as operating as a standalone device.


Please try our free version to see what DAF Professional can do for you!


If you encounter any problems then please email to support@speechtools.co and we will do our very best to help you.

Feb 18
2015
Version 3.2

DAF Professional has been developed to be the leading app to help people who stammer or have Parkinson's Disease. It helps people to slow their rate of speech down which makes it sound clearer to others.

DAF Professional has been designed and tested by a certified and practicing Speech and Language Therapist (MSc, PGDip, BAHons, HPC registered and member of RCSLT). DAF Professional is the most effective and efficient Delayed Auditory Feedback (DAF) currently on the Android Market. No other app delivers the low latency required for effective use.


Delayed Auditory Feedback (DAF) is a well established speech and language therapy tool which helps people to speak more slowly. However, until recently, devises have been cumbersome to carry around, difficult to adjust, very expensive and therefore not widely used.

DAF was origionally developed for people who stammer, but has since been shown to work with people with other speech difficulties, such as those with Parkinson's Disease (Downie et al., 1981; Dagenaise, Outhwood & Lee, 1998; Lowit et al., 2006 and most recentely Lowit et al., 2010).


It works by enabling someone to hear his or her speech in an altered manner. This disruption to the normal auditory feedback loop causes the speaker to slow down. Research has shown that DAF will be of benefit to approximately a third of people who have a stammer or Parkinson's. Clinical research has not been carried out as yet on other client groups. However, DAF may well be of benefit to people with other medical speech conditions.


DAF Professional is an easy to use professional speech therapy tool which could make a huge difference to you or someone you know.


DAF Professional works during phone calls on many phones as well as operating as a standalone device.


Please try our free version to see what DAF Professional can do for you!


If you encounter any problems then please email to support@speechtools.co and we will do our very best to help you.

Feb 17
2015
Version 3.1

DAF Professional has been developed to be the leading app to help people who stammer or have Parkinson's Disease. It helps people to slow their rate of speech down which makes it sound clearer to others.

DAF Professional has been designed and tested by a certified and practicing Speech and Language Therapist (MSc, PGDip, BAHons, HPC registered and member of RCSLT). DAF Professional is the most effective and efficient Delayed Auditory Feedback (DAF) currently on the Android Market. No other app delivers the low latency required for effective use.


Delayed Auditory Feedback (DAF) is a well established speech and language therapy tool which helps people to speak more slowly. However, until recently, devises have been cumbersome to carry around, difficult to adjust, very expensive and therefore not widely used.

DAF was origionally developed for people who stammer, but has since been shown to work with people with other speech difficulties, such as those with Parkinson's Disease (Downie et al., 1981; Dagenaise, Outhwood & Lee, 1998; Lowit et al., 2006 and most recentely Lowit et al., 2010).


It works by enabling someone to hear his or her speech in an altered manner. This disruption to the normal auditory feedback loop causes the speaker to slow down. Research has shown that DAF will be of benefit to approximately a third of people who have a stammer or Parkinson's. Clinical research has not been carried out as yet on other client groups. However, DAF may well be of benefit to people with other medical speech conditions.


DAF Professional is an easy to use professional speech therapy tool which could make a huge difference to you or someone you know.


DAF Professional works during phone calls on many phones as well as operating as a standalone device.


Please try our free version to see what DAF Professional can do for you!


If you encounter any problems then please email to support@speechtools.co and we will do our very best to help you.

Oct 19
2014
Version 3.0

DAF Professional has been developed to be the leading app to help people who stammer or have Parkinson's Disease. It helps people to slow their rate of speech down which makes it sound clearer to others.

DAF Professional has been designed and tested by a certified and practicing Speech and Language Therapist (MSc, PGDip, BAHons, HPC registered and member of RCSLT). DAF Professional is the most effective and efficient Delayed Auditory Feedback (DAF) currently on the Android Market. No other app delivers the low latency required for effective use.


Delayed Auditory Feedback (DAF) is a well established speech and language therapy tool which helps people to speak more slowly. However, until recently, devises have been cumbersome to carry around, difficult to adjust, very expensive and therefore not widely used.

DAF was origionally developed for people who stammer, but has since been shown to work with people with other speech difficulties, such as those with Parkinson's Disease (Downie et al., 1981; Dagenaise, Outhwood & Lee, 1998; Lowit et al., 2006 and most recentely Lowit et al., 2010).


It works by enabling someone to hear his or her speech in an altered manner. This disruption to the normal auditory feedback loop causes the speaker to slow down. Research has shown that DAF will be of benefit to approximately a third of people who have a stammer or Parkinson's. Clinical research has not been carried out as yet on other client groups. However, DAF may well be of benefit to people with other medical speech conditions.


DAF Professional is an easy to use professional speech therapy tool which could make a huge difference to you or someone you know.


DAF Professional works during phone calls on many phones as well as operating as a standalone device.


Please try our free version to see what DAF Professional can do for you!


If you encounter any problems then please email to support@speechtools.co and we will do our very best to help you.

Click to see more