SpeechGym is a stuttering therapy software aimed to help people with stuttering problem control their speech fluency keeping a confidence. SpeechGym is a significant fluency enhancer. It implements Delayed Auditory Feedback (DAF) technique. Basically the program records your voice from a microphone, delays it by a number of milliseconds, and plays the delayed sound back through headphones.

Pocket DAF/FAF Assistant implements Delayed Auditory Feedback and Frequency-shifting Auditory Feedback techniques for PDAs. The application can be used by people who have stuttering problem to control their speech fluency, increase their confidence level and develop carryover fluency when techniques are used on a regular basis.