send link to app

DAF Assistant app for iPhone and iPad


4.9 ( 5389 ratings )
Health & Fitness Medical
Developer: ARTEFACT, LLC
9.99 USD
Current version: 1.4.1, last update: 6 years ago
First release : 28 Mar 2009
App size: 278.7 Kb

DAF Assistant implements Delayed Auditory Feedback (DAF) and Frequency-shifting Auditory Feedback (FAF) techniques that are known to help people with stuttering to speak more fluently.

DAF Assistant can be used by people who stutter to control their speech fluency, slow down speech rate, increase confidence level, and develop good speaking habits.
It is known fact that people with stuttering problem usually speak better when do it together with another speaker. This, so called "chorus effect", causes significant increase in speech fluency. Delayed auditory feedback and Frequency-shifting Auditory Feedback simulate chorus effect by changing your own voice.

DAF delays your voice to your ears a fraction of a second. The application provides delay range from 20 to 320 milliseconds with 10 millisecond increments. FAF shifts the pitch of your voice. The application provides pitch shift in the range from one-half octave down to one-half octave up. FAF enhances the effectiveness of the application when used simultaneously with DAF.

At this moment DAF Assistant cannot operate during phone call.

To use the DAF Assistant application you will need "Apple Earphones with Remote and Mic" headset which is available in Apple Store. On iPhone you can also use Bluetooth headset.

This application is compatible with iPhone, iPod Touch, and iPad.

Please visit our web site to see more information about DAF/FAF and this application.

Pros and cons of DAF Assistant app for iPhone and iPad

DAF Assistant app good for

Anyone considering the other expensive in-ear device should get this app first to try out daf and faf assistance. Give it a test run and see if it helps before spending $4,000+ . I personally love this app, it has helped me in so many different situations.
I bought this app to improve my speech. It helps to prepare for presentations, interviews and etc. in my case, I set 280ms delay so that i can fully analize what ive said. and it helps me concentrate, eliminate other unnecessary thoughts. Im sure it can help in other cases too. weakpoints: not compatible with wireless headsets
A very useful and well-working soft to overcome stuttering problems! I would also like to mention that there is a metodics where such programs can be used not only as a patch but also as a treatment. FAF could force a person to modify the frequency structure of the voice and develop an artist-like voice which would be closing the speech cycle even without FAF programs.
Great app... several comments to reach 5 stars: -distortion frequently occurs.. usually, disconnecting/reconnecting the headphones resolves it, but it can be annoying -distortion sometimes kicks in when switching the daf/faf settings in "live" mode -the sound quality *seems* to degrade over time Some ideas for improvement: -Fix the issues above. -Identify a solid bluetooth (discrete) headset to recommend as a companion to this device. This could prove to be a realistic way to make this approach compete with some of the RIDICULOUSLY expensive alternatives. -Design a mode to randomly change the daf/faf settings to prevent the often discussed issue of device acclimation. Theis would be difficult to do in a hardware daf/faf device, but could be easily implemented in a software approach such as this. Overall... great work... thanks for putting a daf/faf in the hands of people who dont have $5000 burning a hole in their pockets :) Excellent concept, nice implementation.
My son just started using this app on the recommendation by his speech therapist at his junior high school. The very first time he used it he went from profound stuttering to complete coherence with no stuttering at all! I was amazed. His therapist wants him to use it 15-20 minutes a day like when he comes home and tells me about his day or when he needs help with homework. Ive also started having him use it when he needs to talk to me and hes stuttering and/or stammering. You also need to get earphones with a microphone which I found at the Apple store for $29. Well worth the price for the app and the earphones. This app is giving my son confidence that he can overcome his stuttering.
This is a great tool for enhancing fluency and it has a very nice interface. Works great on the iPod Touch 2nd Gen with a wired headset/microphone ... I have NOT tried the new Bluetooth headset/microphone option yet. Daily AM practice with this tool (DAF 120) greatly increases my fluency and my "ease" (less struggling) when speaking throughout the entire day ... the carry-over effect from practicing with a DAF device is REAL. Often when making cellular calls or landline calls, I use the DAF Assistant simultaneously by having the phone at 1 ear and a single headset plug from my iPod Touch at the other ear ... phone conversation fluency is greatly improved by this "shared" technique. Thanks ... Charles PS As stated in the description, DAF Assistant can NOT be used while making calls on the iPhone.

Some bad moments

The application does not run in The background, make an urgent update correcting This bug, it closes every 60 seconds, please correct This failure. The application does not run in The background. _________________________ O aplicativo não funciona em segundo plano, façam uma atualização urgente para corrigir este problema, ele fecha a cada 60 segundos, por favor, corrijam essa falha. O aplicativo não funciona em segundo plano.
I purchased this App yesturday. I wasnt too sure if I should, but I did anyway. My son really needed something to help him and I thought this would help. I wont know if it works, because the App doesnt even load.Shame.. My money needs to be credited back to my card or App fixed.Really?? You have the nerve to raise the price and this doesnt even load!!! give me my money back
This app works great. I use a similar machine in my speech class and I dont ever stutter when I do. But I would like to see it work while on the phone
The concept is great in principle but this app is pretty ineffective. I used it with the Apple ear buds/ microphone as required but unless you hold the mic up to your mouth, you cant hear a thing and even when you do, the feedback is soooo faint. Wish I could have demoed it before shelling out 12 bucks.
February 6, 2014 I purchased this DAF Assistant by ArtefactSoft Software Development for $9.99 for my daughter last year on my iPhone 3 and it worked just fine. I have since upgraded to iPhone 5 and the app no longer works. It opens, but it does nothing. I even deleted and re-downloaded to no avail. I have contacted support at ArtefactSoft via email twice and have not received a response from them. Their website shows their last activity in 2009 so I am assuming the company, ArtefactSoft, is out of business. Their website does not list a business address or a business phone. Just a fax number and non-responsive emails.