Daily Sudoku

Daily Sudoku — the classic number puzzle, reimagined for everyday brain training. 🧠

Whether you're a total beginner or a seasoned solver, Daily Sudoku has something for you: five difficulty levels, five exciting variant modes, and a fresh Daily Challenge every single day. Best of all, it's free and fully playable offline.

🧩 CLASSIC SUDOKU — 5 DIFFICULTY LEVELS
From relaxing, easy grids to truly fiendish, expert puzzles. Thousands of handcrafted boards, each with a guaranteed unique solution.

🎯 DAILY CHALLENGE & STREAKS
A new puzzle every day. Build your streak, stay consistent, and keep your mind sharp.

🔥 FIVE VARIANT MODES
Go beyond the classic grid:
• Diagonal — both main diagonals must also hold 1–9
• Killer — solve through cage sums
• Thermo — numbers rise along each thermometer
• Arrow — cells on an arrow add up to its circle
• Time Attack — race against the clock

🛠️ SMART, STRESS-FREE TOOLS
• Number & cell highlighting
• Pencil notes for candidates
• Hints when you're stuck
• Mistake check & unlimited undo

🎓 LEARN 11 PRO TECHNIQUES
Clear, visual lessons teach real solving methods — from naked singles and hidden pairs to advanced patterns. The app even detects your weak spots and offers a quick lesson.

📊 STATS & ACHIEVEMENTS
Track best times, completion rates, and streaks. Unlock achievements as you improve.

🎨 MADE FOR COMFORT
• 10 beautiful color themes
• Easy-on-the-eyes dark mode
• Adjustable font size & haptic feedback
• Clean one-handed portrait layout

🌍 PLAY ANYWHERE
Fully offline. Available in English, 한국어, 日本語, Español, 简体中文 and 繁體中文.

Download Daily Sudoku and train your brain — one puzzle at a time!

Recent changes:
Stability improvements:
• Fixed rare crashes that could occur after watching reward ads or when starting the next puzzle
• Hardened completion animation and dialog handling
• Smoother, more reliable experience across all devices