# DAF Pro: Fluent Speech — user reviews

> 51 indexed App Store user reviews of DAF Pro by Speechtools Ltd, rated 4.46/5 from 97 ratings.

- Source: https://appshunter.io/ios/app/daf-pro-fluent-speech/id491299921/reviews
- App overview in markdown: https://appshunter.io/ios/app/daf-pro-fluent-speech/id491299921.md
- Rating breakdown: 5★ 74 · 4★ 10 · 3★ 3 · 2★ 4 · 1★ 6

## Newest reviews (11 of 51)

### 3/5 — Pas de conseil

*2026-04-22*

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

**Developer response:** 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.

### 4/5 — 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

*2026-01-27*

不知道为什么听录音每次短句的声音都一下大一下小的

### 2/5 — マイク

*2025-07-20*

数分したら、マイクが切れてしまいます。

**Developer response:** こんにちは。問題は解決しました。ご不便をおかけして申し訳ございません。何かご不明な点がございましたら、support@speechtools.co までご連絡ください。

### 4/5 — Issue with Audio Feedback in the "Voice Stabilizer" App

*2025-03-08*

Hello! Thank you for your "Voice Stabilizer" app—it truly helps with speech practice. However, I encountered an issue: the audio feedback function automatically shuts off after 60 seconds, especially when the app is running in the background. This significantly disrupts the ability to use the app for extended periods without needing to reopen it and restart the function. It would be great if you could add an option for continuous audio feedback, even when the app is minimized, or provide a setting to adjust the duration of this feature. This enhancement would greatly improve the user experience and the effectiveness of the training sessions. Thank you in advance for addressing this issue. I look forward to future updates!

**Developer response:** Hi, we've fixed that now and if there's anything else we can do to help please get in contact at support@speechtools.co.

### 4/5 — 版本更新以后，开降噪直接没声音

*2025-03-05*

版本更新以后，开降噪直接没声音，望改进

**Developer response:** 您好，请降低“背景噪音消除”的音量，这样您就能听到自己的声音，但听不到背景声音。

### 2/5 — Noise

*2024-12-18*

Ripple noise while I’m speaking. Unusable, I’m going to get a refund.

### 4/5 — 反馈

*2024-11-03*

使用感受有一个问题，带蓝牙耳机时延迟时间较长，做不到同步播放声音，而直接听手机话筒没问题，希望可以改进这一点

### 2/5 — It would work great  if

*2020-01-27*

I have to use another DAF app because I’m using AirPods and there is too much delay for me. Can you make no delay like other apps. 23 ms delay and Bluetooth delay is way to much for me.

**Developer response:** Hi, the delay when using Bluetooth is slightly longer than wired headset is due to the technology restrictions. We have the shortest delay of other DAF apps and review each new version of Bluetooth to reduce this in future.

### 3/5 — Cannot use pitch change

*2020-01-08*

Any change in pitch causes a static sound.

**Developer response:** Hi, we've improved the pitch change to be much smoother now

### 3/5 — scratchiness with any pitch change

*2018-08-15*

works great with no change in pitch, but a scratchy noise is apparent with any change in pitch. tried other headphones, no difference.

**Developer response:** Hi, we've made improvements to the pitch change and it's much smoother now

### 5/5 — Отличное приложение

*2017-06-20*

Спасибо разработчикам за такое хорошее и бесплатное приложение

## Most critical reviews (10 lowest-rated)

### 1/5 — マイクが切れる

*2026-03-21*

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。

**Developer response:** 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。

### 1/5 — 别下载，骗子软件

*2025-10-21*

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

**Developer response:** 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。

### 1/5 — DOES NOT WORK ON BEATS EARPHONES

*2024-10-25*

Does not work on BEATS NY DRE earphones. The audio only comes out via phone speakers which is a terrible design!!!!

### 1/5 — Not work in ipad air 5

*2024-04-25*

Not hear any auditory feedback, only making noise after pressing start button.

**Developer response:** Hi, can you please update to the lates version which has a fix for that.

### 1/5 — Doesn’t work!!

*2023-06-04*

Since there’s no way to message the creators of this app, I’ll do it here. I just downloaded this app. It says it’s ‘supposed’ to be super simple to use. Well, if you are looking for an app that only produces a LOUD LOUD buzzing sound in your ears, this is the app for you. It’s so loud that I could practically feel my teeth vibrating and turning down the volume made no change in the ridiculously loud vibrating sound this app created. If you want to actually hear your own voice in hopes of stopping or lessening your stutter, look elsewhere because this app can’t hear your voice over its own incessant, brain numbing buzzing. 

I am using an iPhone 14Pro and 1st Gen AirPods. I know they are both working correctly because I just finished a Duolingo session and had no problem completing today’s lesson. Sound and mic worked just fine. 

What a waste of $4.99!

### 1/5 — This App isn’t it

*2022-01-28*

Like you can’t even hear yourself and Idk why It’s so low. Like you guys are charging people and not updating the app?

### 1/5 — Whack wasted money

*2020-11-26*

Bought it for nothing. Wasted money for it to be super muffled and robotic can’t even hear yourself. Don’t bother

### 1/5 — Pessimo

*2018-09-29*

Sou gago e comprei achando que seria algo revolucionario. A resposta de som não aciona adequadamente, além da microfonia e do eco muito altos e agudos que ocorrem durante o uso

### 1/5 — Can’t use it during phone calls

*2018-08-05*

The reason I bought a paid app was so that I could use it during phone calls. There are many free DAF apps available for the exact same thing it does. 
It also shuts off as the phone automatically locks when idle- doesn’t have the ability to play in background. 
I would rather use the free apps had I known this to be honest.

**Developer response:** Hi, sorry to hear you're disappointed but it's just not technically possible for DAF Pro to work during phone calls as we make clear in our description. This is by design by Apple and no other DAF apps support this, paid or not.

### 1/5 — Junk

*2013-01-05, version 1.2*

Never has worked.  Tried to report the problem, but how do u do that?  Don't waste your money.  I want a refund.

## Most praised reviews (10 highest-rated)

### 5/5 — Life Saver

*2025-09-10*

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.

**Developer response:** That's great to hear, so glad we've been able to help.

### 5/5 — Great app

*2025-05-31*

Great app

**Developer response:** Thanks!

### 5/5 — This works.

*2022-10-10*

I been stuttering for over 50 years and I used everything from speecheasy devices to taking classes.  This works just like the speecheasy without spending $4000. But pros and cons of both.  Thanks so much for helping me with this.  

Anywar to get this to work with a hearing air

**Developer response:** Thanks for the feedback and so glad it's been helpful!

### 5/5 — Excellent app

*2020-05-14*

App operation is straightforward and clean. The clarity of the audio and delay is also top notch. Highly recommend use of the app as an additional tool for the management of stuttering.

**Developer response:** Thanks for the feedback and so glad it's been helpful!

### 5/5 — Thank you so much

*2019-09-18*

From the bottom of my heart, thank you. I work in a call center and I have a stutter. I put an earbud in and put it on 55ms. I don’t stutter at all on the phone now. Then I forgot to put my earbuds in and I didn’t stutter. Hoping it will improve my speech overall after the repetition. It also helps me slow down my speaking and makes me feel calm. This app is priceless. Best 3 bucks I ever spent in my life. I feel hope that I will be able to speak fluently now. This has changed my life. Thank you and god bless

**Developer response:** That's great to hear how useful it is for you, thanks for letting us know!

### 5/5 — 功能很适合我需求

*2019-09-14*

对我这样需要矫正发音的人来说 帮助很大，能及时且听别人声音一样听到自己声音 ，这样才能很好的比较发音（有比较对象）

**Developer response:** 感谢您告知我们！

### 5/5 — Thank youuuuu so much

*2019-06-20*

Wow you cured me god bless ❤️🙏🏽💯

### 5/5 — Подскажите пожалуйста, как все необходимо настроить, какое время задержи надо выставить ? И т.д.

*2019-03-15*

Подскажите пожалуйста, как все необходимо настроить, какое время задержи надо выставить ? И т.д.

### 5/5 — I love this app so much!

*2017-09-09*

Lord and the developer of this app, you have healed me. For a long time, I've stuttered/stammered but today when I tried out this app after purchasing and downloading it, an incredibly amazing miracle just happened. I was finally able to speak much more fluently with a tiny stammer or no stammers at all. Thank you so much for developing this app for those who need this.

### 5/5 — Slow speech down

*2017-07-30*

This has helped me massively to slow my speech down and reduce anxiety when speaking in public and with clients on the phone. It's helped make myself clearly understood. It also helps me manage my breathing which makes me appear more confident and assured. Excellent product

**Developer response:** Thanks for letting us know it's been helpful!

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-03.*