Free
In-App Purchases
About
Sudoku Labs is built for players who want clean, fast, distraction-free Sudoku.
No ads. No accounts. No subscriptions. Just pure Sudoku.
• Six difficulty tiers:
Very Easy, Easy, Medium, Hard,
Expert (Premium) and Extreme (Premium)
• One global daily puzzle — the same challenge for everyone, every day
• Smart pencil notes
• Conflict highlighting
• Optional mistake detection
• Unlimited undo/redo
• Offline play — no internet required
• Puzzle history library
Premium unlock gives you:
• Expert & Extreme difficulty
• +2 hints per difficulty
• Increased mistake allowance
• One-time purchase — no subscription, ever
• Support independent development — no subscriptions, ever.
Designed for focus. Built for performance.
If you love Sudoku without clutter, this is your app.
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What's New in Sudoku Labs
1.2
March 19, 2026
What’s New in Version 1.2 • Learn Sudoku techniques New training mode with short guided lessons for Naked Singles, Hidden Singles, and Pointing Pairs. • Teaching hints Hints now explain the logic behind a move instead of just filling a cell. • Improved hint visuals Highlights clearly show source cells and eliminations to make techniques easier to understand. • Training improvements Lesson flow refined with clearer steps and completion prompts. • UI polish and bug fixes
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In-App Purchases
$3.99
Sudoku Labs
Fast, clean Sudoku with daily puzzles
