232+ iOS apps & games curated and reviewed
The best killer sudoku 6x6 apps on iPhone average 4.7★ across 232+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.
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 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.
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 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.
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.
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 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 logic puzzle experience combining Sudoku and Kakuro elements. Solve grids by filling numbers 1-9, ensuring each appears once per row, column, and box, while also meeting area sum clues. Features include hints, pencilmarks, and progress previews.
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.
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 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 in a classic number-placement puzzle with handcrafted challenges across four skill levels. Features include error highlighting, smart note-taking, and hints to aid your solving. Compete with friends and track your progress with detailed statistics.
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 your mind with a logic-driven number puzzle game offering thousands of handcrafted challenges. Improve thinking, memory, and concentration with various difficulty levels and grid formats, playable entirely offline.
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 your mind with a challenging Sudoku game offering thousands of unique puzzles across multiple difficulty levels. Track your progress, use helpful tools, and connect with a community of fellow puzzle enthusiasts.
This app offers a comprehensive Sudoku experience with thousands of puzzles across multiple difficulty levels. It includes features like hints, step-by-step help, customizable gameplay, and offline play. Track your progress, unlock achievements, and explore classic and modern Sudoku variations.
Engage in a classic Sudoku experience with multiple difficulty levels suitable for all ages. Enjoy a clean interface, track your game history, and access unlimited solutions with a yearly subscription.
Engage your logic skills with this classic number-placement puzzle. Solve thousands of daily challenges across four difficulty levels, with helpful hints and error correction tools. Enjoy a smooth, paper-like interface that automatically saves your progress.