Sudoku Zen: Daily Puzzle

Sudoku Zen is the free sudoku puzzle game with a fresh daily challenge, 4 difficulty levels, smart hints, and zero clutter. Play offline, build a streak, find your focus.

Whether you're picking up sudoku for the first time or chasing your fastest Expert solve, Sudoku Zen meets you exactly where you are — calm, fast, and respectful of your time.

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🧩 CLASSIC 9×9 SUDOKU, DONE RIGHT

• Classic 9×9 sudoku grid — the real deal, no gimmicks
• 4 difficulty levels: Easy, Medium, Hard, Expert
• Unlimited puzzles — generated locally, never run out
• Fresh daily puzzle every day — same puzzle for every player
• Streak counter that respects timezone & midnight crossover
• Notes / pencil mark mode for serious solvers
• Auto-save — pick up exactly where you left off
• 100% offline — no Wi-Fi, no account, no sign-up

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❤️ THREE LIVES — OPTIONAL, OPT-IN

Want a real challenge? Switch on "Limit mistakes to 3" in Settings and play with the classic three-lives format used in tournaments.

• Three hearts per puzzle
• Out of lives? Watch a short ad to keep your puzzle alive (+1 life)
• Zen Pass members continue free, no ad required
• Toggle OFF anytime — play unlimited and stress-free instead

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💡 SMART TOOLS THAT MAKE YOU BETTER

• Error highlighting — catch mistakes before they cascade
• Same-number highlighting — instantly see every matching digit
• Row, column, and box highlighting — stay oriented in tough puzzles
• Hints when you're stuck — use sparingly or earn more
• Error-check button — verify before you commit
• Undo & redo — explore fearlessly
• Sound effects and haptic feedback for a satisfying solve

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📅 DAILY PUZZLE & STREAKS

• A fresh, hand-tuned daily challenge every single day
• Same puzzle worldwide — compare your time with friends
• Streak chip on the home screen — never lose track
• Streak survives midnight: finish a puzzle started yesterday and it counts for yesterday
• Optional daily reminder notifications — gentle, never spammy

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📊 TRACK YOUR PROGRESS

• Current streak & best streak counter
• Total puzzles solved, win rate, total time played
• Best time per difficulty — Easy through Expert
• Daily-only stats: 3-day, 7-day, 30-day milestones
• Watch yourself get measurably faster over time

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🎨 PLAY IT YOUR WAY

• Light, Dark, and System (auto) themes built in
• Premium themes unlock with Zen Pass
• Adjustable text size for readability
• Sound, haptics, and highlight settings — fully customisable
• Auto-remove notes when the digit is placed

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🌿 ZEN PASS — GO DEEPER

Upgrade to Zen Pass and unlock the full Sudoku Zen experience.

✓ No ads — pure, uninterrupted puzzle time
✓ Unlimited hints and error checks
✓ Continue with extra lives without watching ads
✓ Premium themes — personalise your board
✓ Advanced analytics — hourly play, weekly trends, daily calendar

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🎯 WHO IS SUDOKU ZEN FOR?

For the person who wants a brain training game that respects their time and intelligence. No tutorial you can't skip. No energy meters. No daily spin wheels. Just a classic logic puzzle that works — on your phone, on your tablet, on the bus, on a plane.

If you love logic puzzles, number games, or brain training and you're tired of apps that bury the game under monetisation — this is the sudoku app you've been looking for.

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FREE TO PLAY. CALM BY DESIGN.

Download Sudoku Zen — the free daily sudoku puzzle game for Android that takes your brain workout seriously.

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