230+ iOS apps & games curated and reviewed
The best killer sudoku 6x6 apps and games on iPhone average 4.8★ across 230+ titles — we've ranked them by what real users actually keep on their phones. Updated July 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (5) | No | Yes | Jul 2026 |
| 2 |  | Free | 4.7★ (216K) | Yes | Yes | Aug 2026 |
| 3 |  | Free | 4.7★ (27K) | Yes | Yes | Aug 2026 |
| 4 |  | Free | 4.8★ (1.9K) | No | Yes | Aug 2026 |
| 5 |  | Free | 4.7★ (161K) | Yes | Yes | Aug 2026 |
| 6 |  | Free | 4.8★ (6.1K) | Yes | Yes | Aug 2026 |
| 7 |  | Free | 4.8★ (304K) | Yes | Yes | Aug 2026 |
| 8 |  | Free | 4.7★ (104K) | Yes | No | 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.
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.
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 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 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.
This logic puzzle game challenges players to fill a grid with numbers, ensuring sums within cages match designated totals. It offers various difficulty levels, helpful tools like notes and hints, and daily challenges for brain training.
Engage your mind with over 5,000 classic Sudoku puzzles across multiple difficulty levels. Enjoy daily challenges, smart hints, and customizable themes for a stress-free, offline gaming experience. Compete globally and explore new puzzle types.
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 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.
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 your mind with a challenging logic number puzzle. Offers a variety of difficulty levels, from beginner to expert, with daily challenges and helpful hints. Exercise your brain and share your victories with friends.
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.
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.
Experience Sudoku in a feudal Japan setting with beautiful graphics and advanced features. This app offers dual keypad entry, smart note-taking, and error checking to enhance your puzzle-solving. With multiple difficulty levels and thousands of puzzles, it caters to all skill levels.
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.
Engage your mind with a classic Sudoku puzzle game offering an endless supply of challenges. Choose from four difficulty levels and utilize helpful tools like hints and auto-check to enhance your gameplay experience. Train your brain anytime, anywhere with this intuitive and polished application.
This app offers a digital Sudoku experience with multiple difficulty levels and input modes. It includes features like pencil marks, intelligent hints, and auto-saving, allowing you to track progress and compete with others online.
Engage in a classic Sudoku puzzle game designed to relieve stress and sharpen cognitive skills. Offers a vast library of puzzles with adjustable difficulty levels and helpful tools for both beginners and experts. Enjoy daily challenges and collect virtual rewards.
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.