Grocery Items app is used for the replacement of paper based checklist items and can be shared to someone else to get to know or picking up what are the items you needed.
In the items list there are some pre-loaded items where you can delete those with a single slide and you can add items also using the plus(+) on the top left of the view.
In the second tab bar named selected list, you can see the items which you checked in the first tab. You can share the items with respected quantity using the share button on the top right of the view.