The Hauntening was created for a 48 hour game development competition but we are releasing it for free to see if there is much demand for this type of thing in the marketplace.
There was not enough time in the competition to make an inventory so using an item is automatic assuming you have tapped on a part of a room that requires an item you have.
If there is enough interest in this app then we will consider making a full app in a similar style. So please give us your feedback and ratings. Thanks.