A clear answer, when you need one.

Luma Sudoku works fully offline and saves the current puzzle automatically on your device.

Frequently asked questions

How do I start a new puzzle?

Tap the difficulty capsule in the upper-right corner, then choose Easy, Medium, or Hard.

What do Notes do?

Turn on Notes before tapping a number to add or remove a small candidate without committing an answer.

Does the sum need to be 45?

Every completed row, column, and 3×3 box sums to 45 because it contains 1–9 once each. The no-repeat rule is what makes the puzzle valid.

Where is my game stored?

Only on your device. Luma Sudoku has no account, advertising, analytics, or tracking.

Contact

Email support@evisoft.com for help, feedback, or accessibility requests.