249+ iOS apps & games curated and reviewed
The best killer sudoku 6x6 apps and games on iPhone average 4.7★ across 249+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (5) | No | Yes | Jul 2026 |
| 2 |  | Free | 4.8★ (20K) | Yes | Yes | Aug 2026 |
| 3 |  | Free | 4.8★ (2.9K) | Yes | Yes | Aug 2026 |
| 4 |  | Free | 4.7★ (217K) | Yes | Yes | Aug 2026 |
| 5 |  | Free | 4.8★ (659K) | Yes | Yes | Aug 2026 |
| 6 |  | Free | 4.7★ (27K) | Yes | Yes | Aug 2026 |
| 7 |  | Free | 4.7★ (161K) | Yes | Yes | Aug 2026 |
| 8 |  | Free | 4.7★ (38K) | Yes | Yes | Aug 2026 |
This app offers a quick and engaging Killer Sudoku experience on a smaller 6x6 grid. It's perfect for solving puzzles during short breaks, featuring multiple difficulty levels, helpful tools, and customization options. Play offline with no ads or data collection.
Experience a visually stunning and classic Sudoku game with endless free puzzles. Choose from four difficulty levels and enjoy a vast collection of beautiful background images. Compete with others through Game Center achievements and leaderboards.
Explore hundreds of unique Sudoku variations beyond the classic grid. Challenge yourself with diverse puzzle types, difficulty levels, and helpful tools. Enjoy customizable gameplay and track your progress with leaderboards and achievements.
Engage in a challenging math crossword and number puzzle experience. Solve thousands of Killer Sudoku puzzles with enhanced gameplay, daily challenges, and seasonal events. Train your brain and become a sudoku master with helpful hints and notes.
Experience Sudoku with a unique point system, track your progress with runs, and compete globally on leaderboards. Enjoy thousands of free puzzles with adjustable difficulty and customizable looks.
Engage your mind with a logic-based number puzzle game. Place digits 1-9 into grids, ensuring each appears once per row, column, and mini-grid. Enjoy daily challenges, customizable themes, and intelligent hints for a brain-boosting experience.
This app offers a classic Sudoku puzzle experience with a modern design and intuitive controls. It features five difficulty levels, a smart hint system that teaches logic, and daily challenges to keep your mind sharp. Track your progress and enjoy a customizable and relaxing gameplay.
Engage with an unlimited supply of Sudoku puzzles, playable online or offline. This app offers six difficulty levels, daily challenges, and a clean, user-friendly interface designed for both novice and expert players. Enjoy a distraction-free experience with customizable settings and essential tools like undo/redo and note-taking.
Engage your mind with a classic Sudoku puzzle game. Enjoy a clean interface and multiple difficulty levels. Track your progress and compete with others.
Engage in classic Sudoku with unlimited puzzles for all skill levels. Features customizable themes, detailed statistics to track progress, and helpful tools like pencil marks and hints to aid in solving challenging grids. Enjoy a seamless experience with auto-save functionality.
Engage your mind with a classic Sudoku puzzle game offering thousands of challenges across four difficulty levels. Features include note-taking, auto-check, daily challenges, and hints to aid your brain training.
Engage your mind with a classic number puzzle game. It offers over 1000 unique puzzles across five difficulty levels, with new ones added weekly. Enjoy a distraction-free experience with a clean design, note-taking features, and unlimited undo options.
Engage your mind with this classic Japanese logic puzzle. Offers multiple difficulty levels, customizable backgrounds, and unique emoji number options. Track progress and compete with others.
Engage in a daily Sudoku challenge with puzzles at various difficulty levels. Track your progress against global players and enjoy features like smart hints and number highlighting. An optional subscription unlocks unlimited puzzles and removes ads.
Engage your mind with a classic Sudoku puzzle game offering thousands of challenges for all skill levels. Enjoy a user-friendly interface, daily brain training, and helpful hints to master even the most difficult grids. Play offline and track your progress with detailed statistics.
This app offers a digital version of Killer Sudoku, a logic puzzle that combines traditional Sudoku rules with region sum constraints. It features an intuitive interface with specialized tools for note-taking and puzzle solving, designed to be superior to paper-based play.
This app offers a challenging Sudoku experience with 1000 handcrafted puzzles designed for advanced players. It features multiple skill levels, advanced solving techniques, and helpful options to aid your gameplay. Track your progress and challenge yourself with unique, solvable puzzles.
Enjoy the classic paper-and-pencil puzzle game on your phone with a clean, elegant design. Challenge your mind with multiple difficulty levels and helpful tools to aid your solving experience.
Engage in a classic number logic puzzle designed to sharpen your mind. With over 15,000 puzzles and multiple difficulty levels, it offers a challenging yet accessible experience for all players. Enjoy daily challenges, special events, and helpful tools to enhance your gameplay.
Enjoy a vibrant and engaging sudoku experience with over a million free puzzles. This app offers customizable gameplay options, including different themes, note-taking methods, and the choice to play with or without a timer. Track your progress and compete with others in a visually appealing and challenging environment.