Usually, your brain can process up to 600 words-per-minute and the average person speaks at 125 to 150 words-per-minute.
Speed Listening App simply maximizes your brains natural ability to process more words-per-minute.
This is a technique to get through more audiobooks in less time.
All you need is a good audio player on your iPhone/iPod touch.
Yes, thats Speed Listeing.