Sudoku Lab

Sudoku Lab is an elegant, lightweight, and 100% offline Sudoku game for those who enjoy exercising their reasoning skills without distractions. No ads, no registration, no collection of personal data. Just you and the puzzle.

— DAILY CHALLENGE —
Every day a unique puzzle, generated especially for the day. Maintain your streak and challenge your consistency. The daily difficulty

varies throughout the week — easier on Mondays, more challenging on weekends.

— FOUR DIFFICULTY LEVELS —

• Easy — to start loosening your mind (5 lives)

• Medium — to warm up your logical reasoning (5 lives)

• Hard — for those who like to think calmly (4 lives)

• Expert — only for the brave (3 lives)

— SEVEN VISUAL THEMES —

NIOL (elegant navy blue), Light, Dark, Ocean, Forest, Sunset, and Lavender.

— FEATURES TO PLAY BETTER —

• Notes (pencil mode)

• Hearts showing your remaining lives in the header

• ✓ indicator when you complete all of a certain number

• Timely hints

• Unlimited undo

• Auto-save

• Automatic conflict highlighting

— LOCAL STATISTICS —
Best times by difficulty, games completed, current streak in the journal, and historical record.

— PRIVACY FIRST —
Sudoku Lab does not collect personally identifiable information. Only anonymous technical error reports are sent to Sentry to fix bugs (no IP, no user identification). See the Privacy Policy.

Developed by NIOL.