You can use HUDWAY Go in both landscape (horizontal) and portrait (vertical) smartphone orientation.
Provided that automatic screen rotation is unlocked in your phone settings, the app will adjust its orientation automatically — both in regular and HUD mode.
Please note that in horizontal orientation the Home button of your smartphone should be facing right:
Whereas in vertical orientation the phone needs to be in the following position:
Please reach us at firstname.lastname@example.org if you encounter any problem with app orientation.