When taking inventory, instead of using the + and - buttons, you can add or remove full units of a called up item by using swipe gestures.

Note: This only adds full units, not cases.

Swipe up to add 1 full unit to the count

Swipe down to remove 1 full unit from the count

Swipe right to add 6 full units to the count

Swipe left to add 24 full units to the count