The Omni calibration application enables you to switch between the Omni’s default movement mode (move in the direction of your waist) and the Omni’s secondary “head-guided” movement mode (move in the direction of your HMD) in Omni games and applications. The application is required to calibrate your Omni using the HTC Vive headmounted display. If you own the Omni Controller Mount, this application will also automatically complete the Vive “Room Setup” calibration.