The objective is to fill the 9 × 9 grid with digits so that each column, each row, and each of the nine 3 × 3 subgrids that compose the grid contain all of the digits from 1 to 9.

Features:
- Turn on/off Notes Pencil mode
- Made a mistake? No problem just erase it. Unlimited Undo and Eraser actions.
- Hints to guide you through the numbers whenever you are stuck
- Automatically saves your game when you get a phone call, switch applications, or lock the phone
- Light and Dark modes
- Statistics. Track your progress for each difficulty level of sudoku puzzle