DAF Pro: Stutter & Parkinson's

Speechtools Ltd - Speech Therapy Help

About this app

DAF Pro uses delayed auditory feedback (DAF) to help people who stutter and people with Parkinson's disease slow down and speak more fluently. You speak, and hear your own voice through headphones a fraction of a second later. DAF Pro is not a medical device.

Built by a UK speech and language therapist (MSc, PGDip, BA Hons, HCPC registered, RCSLT member), and used by thousands of people in more than 100 countries.

What is delayed auditory feedback?
Delayed auditory feedback is a clinically recognized speech therapy technique. Hearing your voice on a short delay naturally slows your speaking rate, which can make speech smoother and clearer. Research suggests DAF helps around 1 in 3 people who stutter, and it is also used to help people with Parkinson's disease control their speaking rate.

Who uses DAF Pro?
• People who stutter or stammer
• People with Parkinson's disease
• People with dysarthria
• People who clutter
• Speech-language pathologists, for therapy sessions and home practice

Features
✓ Very low latency, so short delays stay short
✓ Adjustable delay and pitch shift
✓ Background mode: keeps working while you use other apps
✓ Microphone boost and background noise reduction
✓ Record and play back your speech
✓ Wired and Bluetooth headsets. Bluetooth adds extra delay that varies by headset, so wired headphones work best for short delays.
✓ No ads, no account needed, works offline

Everyday uses
• Daily fluency practice at home
• Reading aloud and preparing for presentations
• Practicing between speech therapy sessions

Getting started
Put on headphones, set the delay to around 50–100 ms, press Start and speak. Then adjust until your speech feels slower and steadier.

Need support? Contact us at [e-mail]

Ratings and reviews

The app is very good. However, I find that when I use bluetooth earbuds, the app keeps using the phone microphone. As a result, the volume is low, and I've found over the years that for DAF FAF to be effective you need high volume, not to hear the sound of your own voice. Personally, I would be more than willing to pay for a perfect FAF DAF app that manages to mask the sound of your voice and guarantees a more reliable experience, and I strongly encourage speechtools to add more tweaks.

Please enable the device to have the option of using the Bluetooth microphone instead of the phone microphone. I have wireless earbuds but my phone microphone picks up every little sound, so it makes the app unusable. If you make the app able to use Bluetooth microphone it'll be 5 stars easy. Please fix this issue!

I recently installed this paid version. But it has following bugs: 1) not working with phone calls with my realme 5i device with android version 10. 2) It uses mobile phone speaker instead of wireless Bluetooth earbuds. So what is happening, even though i am connected with Bluetooth earbud but if my phone is keeping far to me, it produces very slow voice sound as it is using mobiles speaker not headsets. Please fix these two issue, your app is really great, and very helpful to stuttering people

What’s new

Minor bug fixes