Yes I did buy it. And you will learn the technics that is used to control your stutter (stretch, onset, meditation, daff etc). However it is all on you and your motivation. The app gives you some what more motivation because it sends you reminders etc. However you can find this exercises also on youtube or in books. There is also a community online where you can practice togheter. Nevertheless I did use it the first month and then my motivation went down. So it was not so helpfull for me. I am now trying to follow Marcus Lapp method (see youtube).