Free
In-App PurchasesWith Ads
Rating summary
About
Sereno Sudoku is sudoku built for playing without rushing: large, clear digits, a clean design, and nothing to distract you from the board. It is now three logic games in one app: Sudoku, Killer Sudoku and Nonogram.
• Classic Sudoku in three difficulties, easy to hard, always with a unique solution
• New: Killer Sudoku, the one with sums. Three levels with 120 puzzles each, every one with a verified unique solution and no given digits, the way the genre is meant to be. Included, no purchase needed, with its own "How to play" guide
• Nonograms (picross): pictures you uncover with logic, with large numbers
• Daily Sudoku challenge with a monthly calendar and streak. Play today's or catch up on any day you missed
• Notes with automatic clean-up and unlimited undo. In Sudoku, hints show you the technique instead of just filling the cell
• Number-first mode: pick a digit, then tap the cells where it goes
• Row, column, box and matching-digit highlighting so you can read the board at a glance
• Three themes: light, sepia and dark. Adjustable digit size
• Optional original music, relaxing and unobtrusive
• No lives, no energy, no waiting. No forced ads mid-game: the only ad that shows up on its own comes after you finish, and videos for an extra hint are always your choice
• In English, Spanish, Portuguese, French, German and Italian
• Works completely offline, no account needed
Premium (optional, one-time purchase) gives unlimited hints, unlocks the dark theme and removes ads. Family Sharing supported: buy it once and share it with your family.
A game by Vossen.
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What's New in Sereno Sudoku
1.4
September 24, 2026
New: choose how the board looks. A traditional grid with its lines, just like sudoku on paper, or tiles. It applies to Sudoku and Killer, and you can switch any time in Settings → Game.
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Subscriptions & In-App Purchases
$3.99
Premium
No ads, unlimited hints and dark theme









