
DAF Pro: Fluent Speech
Help for Stutter & Stammer
$4.99 · Designed for iPad
The #1 DAF App Used Worldwide!
DAF Pro is a professional speech therapy tool designed to help people who stammer or have neurological conditions like Parkinson's Disease. It helps slow down speech, making it clearer and more fluent.
Why Choose DAF Pro?
* Proven Speech Therapy – Uses Delayed Auditory Feedback (DAF), a clinically recognized technique.
* Ultra-Low Latency – Real-time feedback, even in the background.
* Easy to Use – Designed for all users, from professionals to individuals.
* Trusted by Experts – Developed & tested by a certified Speech & Language Therapist.
How It Works
DAF Pro alters how you hear your own speech, helping to naturally slow down your speaking rate. Research shows that DAF benefits 1 in 3 people with a stammer or Parkinson's.
Designed for Convenience
Works even when the screen is off
Supports wired & Bluetooth headsets (note: Bluetooth adds a 60ms delay)
No ads, no data collection – GDPR compliant
What Users Say
* "Life-changing for my speech!"
* "Simple and effective – highly recommend!"
Have questions or feedback? We'd love to hear from you! Contact us at support@speechtools.co
Added support for 12 new languages
The developer, Speechtools Ltd, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Speechtools Ltd
- Size
- 12 MB
- Category
- Medical
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
English and 25 more
- English, Arabic, Danish, Dutch, Filipino, French, German, Greek, Hebrew, Hindi, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Vietnamese
- Age Rating
4+
- 4+
- Copyright
- © Speechtools Ltd 2026
