# Sudoku. Simple & Elegant. — Classic Brain Training Puzzles > Classic Brain Training Puzzles (iPhone/iPad app by MICHAEL CHARLES LOCKYER.) - Source: https://appshunter.io/ios/app/sudoku-simple-and-elegant/id6756303439 (this page in markdown: same URL + `.md`) - Developer: [MICHAEL CHARLES LOCKYER](https://appshunter.io/developer/1859958591) - Category: Games, Entertainment, Casual, Puzzle - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 13.0 · 153 MB - Languages: Arabic, Catalan, Croatian, Czech, Danish, Dutch, English, Finnish, French, German and 23 more - Released: 2026-01-20 - Data updated: 2026-07-17 - User reviews in markdown: https://appshunter.io/ios/app/sudoku-simple-and-elegant/id6756303439/reviews.md ## What is Sudoku. Simple & Elegant.? Learn and master Sudoku, from your very first puzzle to the most advanced techniques. Sudoku. is more than a puzzle app — it's a complete coaching platform. With 41 solving techniques, interactive tutorials, and a 50-level campaign, every feature is designed to help you understand the logic behind each move. No guessing, no random hints. Just clear, technique-driven learning that makes you a better solver. Whether you're starting out with Naked Singles or mastering X-Chains, Sudoku. meets you where you are and guides you forward. LEARN WITH 41 TECHNIQUES • Technique Library — browse and practice 41 solving techniques with interactive tutorials • Campaign Mode — 50 progressive levels across 5 worlds, from beginner to grandmaster • Smart Hints — explain the technique behind each step, not just the answer • Chain Drawing — visualize complex solving logic directly on the grid DAILY CHALLENGES • A fresh puzzle every day, identical for players worldwide • Build your streak and track your progress on the calendar • Compete on global leaderboards and see how you rank SIX DIFFICULTY LEVELS • Easy: Perfect for beginners and quick mental warm-ups • Medium: A satisfying challenge for everyday play • Hard: Put your logic skills to the test • Expert: For serious puzzle solvers who want more • Pro: Push your limits with advanced techniques • Master: The ultimate challenge for true Sudoku masters ELEGANT DESIGN • Clean, newspaper-inspired aesthetic that feels timeless • Ten beautiful color themes with light and dark variants • Customizable cell highlight and note colors • Smooth animations and responsive, native feel • Dark mode for comfortable late-night sessions SMART TOOLS • Pencil marks and inline candidates for noting possibilities • Draw chains to trace complex solving logic • Unlimited undo and redo — experiment freely • Error highlighting to catch mistakes early • Auto-save ensures you never lose your progress • Highlight matching numbers to spot patterns instantly TRACK YOUR MASTERY • XP system with 100 levels to achieve • 100 achievements across 6 categories • Technique mastery tracking in the library • Campaign progress across 50 levels • Win streaks and personal best times • Game Center integration for competing with friends • Cloud sync keeps your progress safe across devices PLAY YOUR WAY • Works completely offline — play anywhere, anytime • No account required to start playing • 71 languages supported with full localization • Free to play with no paywalls blocking content WHY PLAYERS LOVE SUDOKU. Sudoku. transforms a daily ritual into a journey of continuous improvement. Instead of guessing or Googling, you learn the real techniques that master solvers use — and the app teaches them to you one step at a time. It's the difference between solving puzzles and truly understanding them. Start your journey today. Download free and discover what it means to truly master Sudoku. Terms of Use: https://www.locksmithcreativemilan.com/sudoku/legal/terms-of-service.html ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Premium Monthly | $2.99 | per month | | Premium Yearly | $17.99 | per year | ## Version history (last 5 releases) ### 2.2.3 — 2026-04-01 Welcome to Sudoku. 2.0 — the biggest update we've ever made. This isn't just an update. It's a complete reimagining of what a Sudoku app can be. Sudoku. is now a full coaching platform designed to take you from beginner to grandmaster. What's new: • 41 Solving Techniques — from Naked Singles to X-Chains, every technique explained and interactive • Technique Library — browse, learn, and practice each technique with real solver-derived examples • Campaign Mode — 50 progressive levels across 5 worlds of increasing difficulty • Smart Hints — hints now explain the technique behind each step, not just the answer • Chain Drawing — draw chains directly on the grid to visualize complex solving logic • Cloud Sync — your campaign progress and technique mastery sync across all your devices • Inline Candidates — see all possible values displayed directly in cells • Customizable Colors — personalize cell highlights and pencil mark colors Every hint teaches. Every level builds on the last. Every technique you master opens the door to the next. Thank you for playing Sudoku. We read every review — your feedback shaped this update. Accessibility improvements, bug fixes and stability improvements. ### 2.2.2 — 2026-03-27 Welcome to Sudoku. 2.0 — the biggest update we've ever made. This isn't just an update. It's a complete reimagining of what a Sudoku app can be. Sudoku. is now a full coaching platform designed to take you from beginner to grandmaster. What's new: • 41 Solving Techniques — from Naked Singles to X-Chains, every technique explained and interactive • Technique Library — browse, learn, and practice each technique with real solver-derived examples • Campaign Mode — 50 progressive levels across 5 worlds of increasing difficulty • Smart Hints — hints now explain the technique behind each step, not just the answer • Chain Drawing — draw chains directly on the grid to visualize complex solving logic • Cloud Sync — your campaign progress and technique mastery sync across all your devices • Inline Candidates — see all possible values displayed directly in cells • Customizable Colors — personalize cell highlights and pencil mark colors Every hint teaches. Every level builds on the last. Every technique you master opens the door to the next. Thank you for playing Sudoku. We read every review — your feedback shaped this update. Accessibility improvements, bug fixes and stability improvements. ### 2.2.0 — 2026-03-19 Welcome to Sudoku. 2.2.0 — the biggest update we've ever made. This isn't just an update. It's a complete reimagining of what a Sudoku app can be. Sudoku. is now a full coaching platform designed to take you from beginner to grandmaster. What's new: • 41 Solving Techniques — from Naked Singles to X-Chains, every technique explained and interactive • Technique Library — browse, learn, and practice each technique with real solver-derived examples • Campaign Mode — 50 progressive levels across 5 worlds of increasing difficulty • Smart Hints — hints now explain the technique behind each step, not just the answer • Chain Drawing — draw chains directly on the grid to visualize complex solving logic • Cloud Sync — your campaign progress and technique mastery sync across all your devices • Inline Candidates — see all possible values displayed directly in cells • Customizable Colors — personalize cell highlights and pencil mark colors Every hint teaches. Every level builds on the last. Every technique you master opens the door to the next. Thank you for playing Sudoku. We read every review — your feedback shaped this update. Accessibility improvements, bug fixes and stability improvements. ### 2.0.5 — 2026-03-12 Welcome to Sudoku. 2.0 — the biggest update we've ever made. This isn't just an update. It's a complete reimagining of what a Sudoku app can be. Sudoku. is now a full coaching platform designed to take you from beginner to grandmaster. What's new: • 41 Solving Techniques — from Naked Singles to X-Chains, every technique explained and interactive • Technique Library — browse, learn, and practice each technique with real solver-derived examples • Campaign Mode — 50 progressive levels across 5 worlds of increasing difficulty • Smart Hints — hints now explain the technique behind each step, not just the answer • Chain Drawing — draw chains directly on the grid to visualize complex solving logic • Cloud Sync — your campaign progress and technique mastery sync across all your devices • Inline Candidates — see all possible values displayed directly in cells • Customizable Colors — personalize cell highlights and pencil mark colors Every hint teaches. Every level builds on the last. Every technique you master opens the door to the next. Thank you for playing Sudoku. We read every review — your feedback shaped this update. Accessibility improvements, bug fixes and stability improvements. ### 2.0.2 — 2026-03-04 Welcome to Sudoku. 2.0 — the biggest update we've ever made. This isn't just an update. It's a complete reimagining of what a Sudoku app can be. Sudoku. is now a full coaching platform designed to take you from beginner to grandmaster. What's new: • 41 Solving Techniques — from Naked Singles to X-Chains, every technique explained and interactive • Technique Library — browse, learn, and practice each technique with real solver-derived examples • Campaign Mode — 50 progressive levels across 5 worlds of increasing difficulty • Smart Hints — hints now explain the technique behind each step, not just the answer • Chain Drawing — draw chains directly on the grid to visualize complex solving logic • Cloud Sync — your campaign progress and technique mastery sync across all your devices • Inline Candidates — see all possible values displayed directly in cells • Customizable Colors — personalize cell highlights and pencil mark colors Every hint teaches. Every level builds on the last. Every technique you master opens the door to the next. Thank you for playing Sudoku. We read every review — your feedback shaped this update. Accessibility improvements, bug fixes and stability improvements. ## More apps by MICHAEL CHARLES LOCKYER - [Numdoku. Daily Killer Sudoku](https://appshunter.io/ios/app/numdoku-daily-killer-sudoku/id6759094745) - [Windoku. Hyper Sudoku.](https://appshunter.io/ios/app/windoku-hyper-sudoku/id6759494100) - [Crossoku. Sudoku X.](https://appshunter.io/ios/app/crossoku-sudoku-x/id6759494212) - [Jigsoku. Jigsaw Sudoku.](https://appshunter.io/ios/app/jigsoku-jigsaw-sudoku/id6759494350) All apps by MICHAEL CHARLES LOCKYER: https://appshunter.io/developer/1859958591 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-17.*