Noticed a number of people had trouble finding the app after downloading. I had the same problem but here's how to get it to work. Swipe down from the top of any screen to reveal the menu. Tap sync. Then go the the home page and select apps. Make sure you're on the Cloud.
Our son has Sensory Integration disorder and the Q has been a life saver as the window sill in his room is completely chewed down to the metal guard. This has been very helpful in reducing his finger and toe biting issues also.
For those of you stuck at the "finding people in your area" screen, make sure you've given permission to your Kindle to find your location in Settings. You'll be stuck at the opening screen until you do that.