Sudoku Master: Number Puzzle

Sudoku Master is a calm, focused sudoku app for daily brain training. Solve classic 9×9 sudoku puzzles, build your streak, and master logic — one number at a time.

WHY THIS SUDOKU APP
Sudoku Master is built around one idea: a quiet place to think. Soft colors, gentle animations, and a clean interface make every sudoku puzzle feel like sitting down with a newspaper and a cup of coffee. No clutter, no pop-ups — just sudoku.

DAILY SUDOKU CHALLENGE
A fresh sudoku puzzle every single day. Build a streak by completing the daily sudoku, earn stars, and climb 12 player ranks from Novice all the way to Mythic. Miss a day and the streak resets — keeps the daily sudoku habit honest.

FOUR DIFFICULTY LEVELS
• Easy sudoku — 35 empty cells, perfect for learners
• Medium sudoku — 45 empty cells, a balanced number puzzle
• Hard sudoku — 52 empty cells, for experienced solvers
• Expert sudoku — 57 empty cells, only for the brave

Every sudoku puzzle is guaranteed uniquely solvable through pure logic — no guessing required.

KEY FEATURES
• Classic 9×9 sudoku grid with smooth controls
• Daily sudoku challenge with rotating difficulty
• Unlimited practice sudoku puzzles
• 12 player ranks earned through stars
• Weekly events with bonus star rewards
• Smart highlighting of related cells and matching numbers
• Pencil marks (notes) with optional auto-cleanup
• Undo, erase, hints and pause anytime
• Detailed statistics — win rate, best times, completion calendar
• 19 achievements to unlock
• Streak system with daily reminders
• 6 color themes including AMOLED true-black for OLED displays
• Share your sudoku results with friends
• Works fully offline — no internet required, no wifi needed
• Available in English, Turkish, Arabic, Spanish and Portuguese

HOW TO PLAY SUDOKU
Fill the 9×9 grid so every row, every column, and each 3×3 box contains the digits 1 through 9. Use pencil marks to track candidate numbers. Tap a number from the pad to place it. Use a hint when stuck. Beat your best time and earn up to 3 stars per sudoku puzzle.

If you're new to sudoku, start with Easy — the app guides you with hints and error checking. If you're a sudoku veteran, Expert and Hard will give you real challenge.

NUMBER PUZZLE FOR EVERY MOOD
Whether you have 5 minutes on a coffee break or want a longer focus session before bed, sudoku fits any moment. The timer is optional, the error limit is configurable, and pencil marks make tough sudoku puzzles approachable.

PREMIUM
Upgrade to Premium for:
• Ad-free sudoku experience
• Unlimited hints and unlimited undo
• Real-time error checking
• Advanced statistics
• 4 exclusive color themes
• Auto-cleanup of pencil marks

PRIVACY FIRST
No personal data collection. All sudoku progress stays on your device. No accounts, no sign-up, no tracking — just a quiet number puzzle whenever you want it.

OFFLINE SUDOKU, ANYTIME
No internet? No problem. Sudoku Master works fully offline — on a plane, on the subway, in the mountains. Sudoku is the perfect offline puzzle game.

Train your brain. Build your streak. Master the grid.