Delayed Auditory Feedback（DAF） is a device to play your voice with a delay.
This device has an effect to relief stuttering symptoms though speech of non-stammerer is interrupted.
This device is commonly employed for treatment of stuttering and mobile DAF is also sold in America.
This application is a DAF device working on Android.
When you push down the button and speak to the device, your voice is played with a delay.
* Some studies show that two-thirds of the subjects showed improvement in stuttering symptoms.
* This device works differently for different people.
* An advertisement ceased to come out with the charged version.
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