Count it back. Fewest coins wins.
Read the ticket: the change due is what the customer paid minus the bill. Tap the till to count coins and notes into the tray. Tap a piece in the tray to put it back (free).
Undo takes back your last piece (3 per level). Hint adds the next piece of the fewest-piece answer.
Play a level and your stars and progress show up here. They are saved on this device, and on every device once you sign in.
