SudokuCalm Sudoku that teaches you to solve
Classic Sudoku from Easy to Expert, Killer Sudoku, and a fresh daily challenge. Stuck? A smart hint shows the next logical move and explains why it works.
Everything you need, nothing in the way
Designed for long, relaxed sessions on iPhone, iPad and Android.
Hints that teach
Each hint highlights the cells that matter and names the technique: singles, pairs, triples, pointing pairs and more.
Killer Sudoku
Classic rules plus cages whose numbers add up to the sum. One free Easy Killer puzzle every day.
Daily challenge
A fresh puzzle every day with a free leaderboard, a daily goal ring and streaks to keep you going.
Smart notes
Auto-notes, pencil marks that clean themselves up, and remaining-number counts on the keypad.
Fewer ads, by design
Never an ad in the middle of a puzzle and never after you win. Premium removes every ad.
Play anywhere
Works offline. Sign in with Apple or Google to keep your progress across devices. 11 languages.
Free to play. Premium if you want more.
Premium: zero ads, every Killer puzzle, guided tutor hints, unlimited undo, board themes, the daily archive and advanced stats.
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Lifetime
Prices in USD; local prices may vary. Subscriptions renew automatically until cancelled in your store account. Terms
Ready for today's puzzle?
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