DAF Pro: Stutter & Parkinson's

DAF Pro: Stutter & Parkinson's

Delayed auditory feedback

97 ratings
51 reviews
#85 in paid Medical
🔧 Utilities
🏥 Medical
$5.99

Details

Released
January 4, 2012
Updated
October 30, 2026

Features

DAF Pro: Stutter & Parkinson's screenshot #1 for iPhone
DAF Pro: Stutter & Parkinson's screenshot #2 for iPhone
DAF Pro: Stutter & Parkinson's screenshot #3 for iPhone
DAF Pro: Stutter & Parkinson's screenshot #4 for iPhone
DAF Pro: Stutter & Parkinson's screenshot #5 for iPhone
DAF Pro: Stutter & Parkinson's screenshot #6 for iPhone
DAF Pro: Stutter & Parkinson's screenshot #7 for iPhone
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About

This app uses delayed auditory feedback to help individuals who stutter or have Parkinson's speak more fluently. By hearing your voice with a slight delay, it naturally slows your speech rate, improving clarity and smoothness. It's designed for personal use and speech therapy sessions.

✓Adjustable delay and pitch shift
✓Low latency audio
✓Background operation
✓Speech recording and playback
✓Wired and Bluetooth headset support
Show original description

What's New in DAF Pro

4.11.0

October 30, 2026

Updated for iOS 27

Charts

Top Paid

📉 85-14

Medical

This app dropped -14 positions in Medical chart.

Last updated on November 6, 2026.

User reviews

Pas de conseil

Pas de conseils ou feed back, c’est dommage, il s’agit juste d’enregistrer et écouter en temps réel sa voix

Response from developer

Merci d'avoir essayé l'application ! Le DAF (Delayed Auditory Feedback, ou retour auditif retardé) est une technique de thérapie de la parole bien précise : l'application vous renvoie volontairement votre voix avec un léger décalage, et ce décalage est lui-même le mécanisme thérapeutique. Il est principalement utilisé pour le bégaiement, les troubles de la fluidité, ainsi que les difficultés d'élocution liées à certaines pathologies comme la maladie de Parkinson. Ce n'est donc pas une application de coaching avec des conseils ou des astuces — le bénéfice vient du fait de parler tout en entendant ce retour retardé. Si vous souhaitez en savoir plus pour bien l'utiliser, n'hésitez pas à me contacter via l'e-mail de support dans l'application.

マイクが切れる

本日購入して使用しましたが、しばらくするとマイクが切れました。1から2分後です。練習に使いたいのでこれでは使えません。修正してください。

Response from developer

この度はアプリをご購入いただき、誠にありがとうございます。マイクが1〜2分ほどで切れてしまうとのこと、ご不便をおかけし大変申し訳ございません。通常起こる症状ではございませんので、できるだけ早く修正させていただきたく存じます。 お手数をおかけしますが、アプリ内のサポートメニューより、ご使用の端末モデル、iOSのバージョン、および有線イヤホン/Bluetoothイヤホンのいずれをご使用かをお知らせいただけますでしょうか。原因を特定し、修正版をできるだけ早くご提供いたします。 ご報告いただきありがとうございました。

不知道为什么听录音每次短句的最后一个声音都一会大一会小的

不知道为什么听录音每次短句的声音都一下大一下小的

别下载,骗子软件

也不知道这个评论能不能被看到,比较十三个评论就显示了三个,功能完全不能用,就是个摆设,苹果那边也不给退费,买了就只能被气死。千万别买,拿口吃圈钱的简直不得耗si

Response from developer

您好,很抱歉您遇到了一些问题。请发送电子邮件至 support@speechtools.co 联系我们,我们很乐意为您提供帮助,并向您证明我们绝非诈骗。

Life Saver

This app has been a life saver. I cannot recall the last time I have ever felt more confident going into meetings. Little to no stammering, only have to gather my thoughts before I speak. Thank you to whoever developed this app. I plug in one ear piece to listen during meetings.

Response from developer

That's great to hear, so glad we've been able to help.

Developer apps

FAQ

What is DAF Pro and how does it help stuttering?

DAF Pro utilizes delayed auditory feedback (DAF), a clinically recognized speech therapy technique. By playing back your voice with a slight delay, it encourages a slower speaking rate, which can lead to smoother and clearer speech for individuals who stutter.

Is DAF Pro suitable for people with Parkinson's disease?

Yes, DAF Pro is designed to assist individuals with Parkinson's disease. Research suggests that DAF can help manage speaking rate and improve vocal control for those affected by Parkinson's.

What are the key features of DAF Pro?

DAF Pro offers adjustable delay and pitch shift, very low latency for a natural feel, background operation with the screen off, speech recording and playback capabilities, and compatibility with both wired and Bluetooth headsets.

How much does DAF Pro cost?

DAF Pro is available as a one-time purchase for $5.99. There are no subscriptions or recurring fees associated with its use.

Does DAF Pro have ads?

No, DAF Pro is ad-free. The developers have stated that there are no advertisements within the application.

What devices is DAF Pro available on?

DAF Pro is compatible with iPhones and iPads, running on iOS devices.

How often is DAF Pro updated?

The latest version, 4.11.0, was last updated on October 30, 2026. This indicates a history of regular updates to maintain and improve the application.

Can DAF Pro be used for speech therapy sessions?

Yes, DAF Pro is suitable for speech-language pathologists to use during therapy sessions and for clients to practice at home. Its features support both professional and personal therapeutic use.