The friendly Sudoku is the perfect environment to relax while playing classic Sudoku in. Free, without ads - just like with pencil & paper but better!

All features are available and unlimited in use for free:
⭐ No distractions: ad-free, no pop-ups.
⭐ Uncluttered, clean: focus on solving your puzzle.
⭐ 4 difficulty levels: pick your challenge.
⭐ Automatic pencil mark updates.
⭐ Dark mode / dark theme selectable.
⭐ Fully offline enabled.

Are you a beginner at Sudoku? Choose one of our lower difficulty settings and let us assist you in solving your first puzzles - with highlighting helpers, automatic error marking, and more!
Experienced players can use various preference settings to tailor their experience to their liking. Use pencil marks to solve harder Sudoku and enjoy being able to undo every change you make. Our smart pencil marks update automatically when you place a number.

Everyone can enjoy a good puzzle and Sudoku can help you to unwind while keeping your mind sharp and improving logical thinking. We wish you a lovely time playing and solving with our app.

The friendly Sudoku is created with ❤️ by HappyDevs