Note: This app is only accessible to users with a Sway account Sway is an FDA-cleared app that reinvents the way athletes and patients are monitored for signs of imbalance or delayed reaction. Using the built-in motion sensors of a mobile device to assess stability and reaction time, Sway enables health care professionals to objectively assess a patients fall risk, track recovery from an injury, detect instability from medication changes, and for use in concussion screening.