Cash can be used to buy amazing power-ups such as Hint, Auto-Pencil and Extra Time.

- Hint solves one random empty cell.

- Auto-Pencil fills all empty cells with all possible allowed values.

- Extra Times gives you additional time to complete a level.

Hint and Auto-Pencil can be purchased by tapping on their icons (Hint - Light Bulb and Auto-Pencil - Pencil with a star) in the puzzle screen.

Extra Time can be bought when allotted time for a level is over.