This works!
It took me a while to take this seriously but it persistently worked when I did it for even a few days in a raw. I am an evangelist for this app now amongst my friends. I am trying to just 'knee knaw' regularly without paying for the app but there is just something about playing a game especially that one can feel quite silly if not distracted by something else while doing these workouts. So I will probably end up just paying for it. Thank you!