qb DAF - Stuttering Speech Aid
Delayed Auditory Feedback
1,99 € · Designed for iPad. Not verified for macOS.
Speak with confidence. qb DAF plays your voice back in your headphones with a slight delay — a simple technique that helps many people who stutter speak more fluently
Hear your voice differently. Speak more fluently.
qb DAF brings Delayed Auditory Feedback — a technique used by speech-language pathologists for decades — to your pocket. Put on your headphones, press Start, and hear your own voice played back with a slight delay. For many people who stutter, this simple change is enough to noticeably improve fluency and slow down speech naturally.
HOW IT WORKS
Delayed Auditory Feedback (DAF) alters the way you hear yourself while speaking. By delaying your voice by a fraction of a second, it encourages slower, more deliberate speech and can reduce stuttering for many users. DAF is also used to practice pacing in everyday conversation, public speaking, and reading aloud.
FEATURES
• Real-time voice feedback with no recording — your voice goes straight from the microphone to your headphones
• Adjustable delay from 25 to 200 ms, in simple 25 ms steps
• Change the delay live, while you speak, and feel the difference instantly
• Sound waves on screen follow your real voice
• Works in the background and with the screen locked — keep practicing while reading or walking
• Safe by design: starts only with headphones connected, and stops automatically if they disconnect or a call comes in
• Clear warning when Bluetooth headphones add extra latency (wired headphones give the most accurate timing)
• No account, no ads, no tracking. Completely free.
PRIVACY FIRST
Your voice is never recorded, saved, or sent anywhere. All audio is processed in real time on your device and disappears the moment you hear it. qb DAF collects no data at all.
GETTING STARTED
1. Connect your headphones (wired recommended)
2. Choose your delay — most people start around 50–100 ms
3. Press Start and speak
qb DAF is a self-practice tool and is not a medical device. It does not replace professional advice from a speech-language pathologist.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
A big update for qb DAF!
• The waves now follow your real voice as you speak
• Delay range extended up to 200 ms (in 25 ms steps)
• Change the delay live, without stopping playback
• New warning when using Bluetooth headphones, which add extra latency
• Safer by design: the app now starts only with headphones connected, and stops automatically if they disconnect or a call comes in
• Completely rebuilt audio engine for rock-solid start/stop reliability
• Refreshed for the latest iPhones and iOS versions
The developer, Giuseppe Di Cienzo, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Giuseppe Di Cienzo
- Size
- 23.3 MB
- Category
- Medical
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 11 more
- English, French, German, Hebrew, Indonesian, Italian, Japanese, Korean, Russian, Simplified Chinese, Spanish, Turkish
- Age Rating
16+
- 16+
- Contains
Unrestricted Web Access
- Copyright
- qb | Delayed Auditory Feedback ©
