So how does it work getting your kids to do their chores if you don't pay allowance? Can you modify it to make them appreciate the free room, board and incidentals they get?

No thank you. Teaching kids financial responsibility comes with dealing with money face to face - and not over a faceless app. The only way I can see this being a benefit would be when a parent has to be physically away from the child - like being deployed overseas - or when the young person is away, such as at college. Then it makes a lot of sense.