Candoku: Sudoku Offline Puzzle

Free offline Sudoku with a sweet candy theme - a relaxing brain game and number puzzle you can play with no wifi, no internet.

Candoku is a free, candy-themed Sudoku game you can play completely offline. No wifi, no clutter, no pressure - just sweet, relaxing number puzzles that keep your mind sharp. Say goodbye to boring black-and-white grids and hello to a colorful, calming way to train your brain, wherever you are. Solve daily Sudoku challenges, sharpen your logic and memory, and unwind one satisfying puzzle at a time.

✨ WHY YOU WILL LOVE CANDOKU
Keep Your Mind Sharp: daily challenges that gently exercise memory, logic, and problem-solving so your brain stays active.
Smart Hints: stuck on a tough row? Intuitive hints guide you to the next move and quietly teach better strategy.
Sweet and Relaxing: a beautiful candy-themed interface with soft colors and satisfying feedback for a low-stress solve.
Play Offline: no wifi and no internet needed - enjoy Sudoku puzzles on a plane, a train, or the couch.
Free to Play: pick up and solve in seconds. A one-time Lifetime unlock adds tools and removes ads.
Daily Challenges: a fresh puzzle every day to keep your streak and your mind going.
Pencil Notes: mark candidate numbers in each cell, just like solving on paper.
Undo and Erase: experiment freely - step back any move without losing progress.
Multiple Difficulties: easy, medium, hard, and expert boards for steady, satisfying growth.
Eye-Friendly Design: clean, high-contrast candy colors that are gentle during long, cozy sessions.
Kids Mode: gentle 4x4 and 6x6 candy boards in Easy and Hard - perfect for young solvers.
Learn Real Techniques: an improved tutorial covering Naked Single, Hidden Single, Naked Pairs and Hidden Pairs.

🎯 HOW TO PLAY
Sudoku is simple to learn and endlessly satisfying to master. Fill every row, every column, and every 3x3 box so that each digit from 1 to 9 appears exactly once. Tap a cell, choose a number, and use a hint whenever you want a gentle nudge. Turn on notes to pencil in candidates, and let the clean candy board keep everything easy to read.
Every skill level is welcome. Beginners can start with gentle, well-hinted boards that teach the basics, while seasoned solvers can jump straight into hard and expert grids that demand real strategy. As you improve, the smart hints step back and let your own logic lead.

Candoku is more than a game - it is a small daily ritual for a calmer, sharper mind. A few quiet minutes of number logic can help you focus, slow down, and step away from a noisy feed. Because everything works offline, it is the perfect companion for flights, commutes, waiting rooms, or a relaxing wind-down before bed - just you and the puzzle.

👥 WHO IT IS FOR
Candoku is perfect for lifelong Sudoku lovers, newcomers learning the basics, puzzle and brain-game fans, and anyone who wants a calm mental workout on a commute, a coffee break, or a quiet evening at home.

💡 TIPS
Start with the rows, columns, or boxes that already have the most numbers filled in.
Use notes to track which digits are still possible in each cell.
Scan for cells where only one number can possibly fit.
Look for a number that can go in only one spot within a row, column, or box.

❓ FAQ
Q: Do I need an internet connection?
A: No. Candoku is fully playable offline, anytime and anywhere.
Q: Are there different difficulty levels?
A: Yes, from relaxed beginner boards to expert challenges.
Q: Is Candoku free, and does it have ads?
A: Candoku is free to play and supported by ads. A one-time Lifetime unlock removes ads and adds extra solving tools.
Q: Is there a mode for children?
A: Yes. Kids Mode offers smaller 4x4 and 6x6 boards in Easy and Hard, so younger players learn the logic gently.
Q: Can I learn real solving techniques?
A: Yes. The tutorial walks you through Naked Single, Hidden Single, Naked Pairs and Hidden Pairs, step by step.

Download Candoku today and make your daily brain break a little sweeter.

Recent changes:
Thank you for playing Candoku! 🍬

We've been reading your feedback and spent this update making every puzzle feel smoother and more relaxing. Things should run more nicely from start to finish, and help is easier to find when you're stuck.

Enjoying Candoku? A quick review means a lot to us. Happy solving!