Delayed Auditory Feedback DAF  for Lenovo Vibe Z

Delayed Auditory Feedback DAF

V1.0 Stable Version

4.3 94KB 10k+
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  • Delayed Auditory Feedback DAF  for Lenovo Vibe Z
  • Delayed Auditory Feedback DAF  for Lenovo Vibe Z


This android application implements Delayed Auditory Feedback (DAF) technique, which is known to help people with stuttering to speak more fluently

Lenovo Vibe Z smartphone was launched in November 2013. The phone comes with a 5.50-inch touchscreen display with a resolution of 1080 pixels by 1920 pixels at a PPI of 401 pixels per inch.

The Lenovo Vibe Z is powered by 2.2GHz quad-core Qualcomm Snapdragon 800 processor and it comes with 2GB of RAM. The phone packs 16GB of internal storage cannot be expanded. As far as the cameras are concerned, the Lenovo Vibe Z packs a 13-megapixel primary camera on the rear and a 5-megapixel front shooter for selfies.

The Lenovo Vibe Z runs Android 4.3 and is powered by a 3000mAh non removable battery. It measures 149.10 x 77.00 x 7.90 (height x width x thickness) and weigh 145.20 grams.

The Lenovo Vibe Z is a single SIM (GSM) smartphone that accepts a Micro-SIM. Connectivity options include Wi-Fi, GPS, Bluetooth, FM, 3G and 4G. Sensors on the phone include Compass Magnetometer, Proximity sensor, Accelerometer and Ambient light sensor.


How to download Delayed Auditory Feedback DAF form Lenovo Vibe Z?

  1. Check the Android version to verify compatibility of Delayed Auditory Feedback DAF with Lenovo Vibe Z.
    Find Android version: go to "Settings" - "About the phone" - "Android version". Make sure Delayed Auditory Feedback DAF is compatible with Lenovo Vibe Z.
  2. Click the download button to download Delayed Auditory Feedback DAF in Lenovo Vibe Z.
  3. Once the download and installation are complete, find Delayed Auditory Feedback DAF in your home screen and tap the icon to open it.

App Reviews for Lenovo Vibe Z

  • fazail zia
    For those who dnt understand concept of it
    Stuttering cause is explained by one theory that a stammerer speech rate is slower than a normal speaker so if stutter speaks at normal speech rate .. he is bound to get blocks alot .... this app is for decreasing rate at which we speak .... to use it properly .... set the delay rate to 300 ms in start ... and slow ur rate of speech accordingly .. meaning till ur one syllable voice is not heard by delay .. dnt say another syllable before it thus the speech rate will decrese .....
  • ritwick bhattacharyya
  • Jazz Kaur
    Thanks to the maker! :)
    Helping my close ones to get over with their stuttering. :)
  • Sgt. Dupree
    It's Great
    I love this app, it even works during phone calls.
  • Mark Bryan
    Great App
    I have had a stutter for all my life and this app is helping me control it alot better and i feel uncomfortable without it. Give yourself time to adapt to it and you will see results
  • Toseeq Ahmed
    need practice 3-4 hours per day for 1 month your stammering will be vanished
  • Илья Краснов
    Работает отлично! Телефон lenovo p780.
    It s too godd.
  • Troy Bryan
    A great tool to help me stop stuttering
  • Armuotas
    Nice app
    Only problem is with the earphones with mic. It gives tunnel echo and even creates positive feedback loop with all the squeeks and stuff. Doesn't happen with ordinary earphones.
  • Mark F
    This is by far the best daf that I have used. Thank you to the developer :)
  • Syed Nadeem
    Looks good
    Installed yesterday after a friends recommendation. Lets hope it helps.
  • inception prestige
    Practice daily
    Good application... u can check your stammering voice... use this in front of your friends making conditions of any presentation..
  • sabarish arulselvan
    Very helpful
    It make my speech very fluently but one request to app maker pls don't make cost for this pls pls
  • Mohamed Nur-Sed
    Great, great app for people wanting an easy way to help with their stuttering. Without any additional therapy it helped me speak almost completely fluently and it was easy to use with just headphones attached to my smartphone. A must have for anyone looking to gain some easy help with their speech.
  • Edward Bowers
    Absolutely the best Speech Jammer on the market!
    Brilliant! The grandfather of all speech jammers!!!
  • Brandon Wells
    Great fun with your friends.
    I keep stuttering all the time with this app.
  • Shray Sharma
    Very good
    But the voice is replay when the person want to listen the sound again after pressing the stop button and it also not work during the phone calls
  • Reece M
    Works great except for the fact that it doesn't work during calls.
  • shazad ali
    very usefull.please add recording function.thanks so much.Shahzad pakistan
  • Dan Wallis
    Recommended for stuttering preachers
    As a stuttering preacher, I've found considerable fluency through this app. I only use it when preaching or when reading to my children (both scenarios have given me a great deal of stuttering problems in the past) as I don't want to become immune to its effects by over use! I use it with bluetooth headphones (with only one ear piece in) and place my smartphone on the podium in front of me so it has no trouble picking up my voice. I can now say what I want to say!
    Excellent app
    Loved it used first time feeling better
  • Basheer Al-Khonaizy
    Amazing work just perfect for me. Thank you
  • Justin Space
    I learned how to use it with phone calls and I'm pleased. Use the app while calling someone. Its a great app.
  • saul trujillo
    This is hella sick!
    From most obvious to important Reverb effect, frequency change, volume boost optional
  • Jarryal Montique
    It's amazing...
    But it tends to lag a couple seconds back when talking for a prolonged period of time
Delayed Auditory Feedback DAF

Delayed Auditory Feedback DAF