The HP Omnicept Runtime and HP Omnicept SDK come with the Eye Tracking Calibration app.
The Omnicept team recommends you run eye tracking calibration between users. If eye tracking accuracy is of the most important to your implementation, HP Omnicept team then recommends running Eye Tracking Calibration everytime your user puts on the headset.
Eye Tracking Calibration confirms that the headset is placed on your head ideally for best viewing experiences, as well as guides you to adjust the interpupillary distance (IPD).
Eye Tracking Calibration can be found in Program Files /.../HP Omnicept/HP Omnicept Eye Tracking Calibration The ETCal-Win64.exe can be found under ETCal/Binaries/Win64.