There are a number of mental health apps out there that help people cope with a variety of issues, but this smartphone game specifically helps people with anxiety disorders manage panic attacks. From Play Labs London, Flowy utilizes breathing exercises and gamification to sooth those in the throws of crippling panic.
In the game, players move a little boat down its path. The boat is controlled with a button, which you hold down as you breath in and let go of when you breath out. The goal of the game is to retrain the way you breathe, using your diaphragm instead of your chest muscles. This helps manage panic attacks by slowing the heart rate.