Just downloaded, cool game
Can see how it could be addictive!
One minor piece of feedback, on your help screen, on the second to last item "Touch a floor and lift goes there. Lift can't change direction when on the move. Faces show how many people is board." might sound better as: " Touch a floor and the lift goes there. Lift can't change direction when on the move. Faces show how many people are aboard."
Good work though!