Play and create Sudoku puzzles with a unique retro interface. Offers five difficulty levels and helpful aids for players. Includes a solver to check puzzle solvability and uniqueness.
uglySudoku by John Coddington



212+ iOS apps & games curated and reviewed
The best uglysudoku apps on iPhone average 4.7★ across 212+ titles — we've ranked them by what real users actually keep on their phones. Updated May 2026.



Play and create Sudoku puzzles with a unique retro interface. Offers five difficulty levels and helpful aids for players. Includes a solver to check puzzle solvability and uniqueness.






Engage your mind with a classic number puzzle game. Offers thousands of puzzles for all skill levels, from beginner to expert. Features tools like hints and auto-check to aid your gameplay and track your progress.






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 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 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.


This app offers a comprehensive Sudoku experience with 12 unique puzzle variants, including classic, jigsaw, and killer modes. Enjoy daily challenges, customizable themes, and detailed statistics. Start with free variants and unlock all puzzles with a premium subscription.


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 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 number puzzle experience with no advertisements. This app offers unlimited grids, six difficulty levels, and daily challenges, all within a user-friendly and distraction-free interface. Enjoy a smooth and intuitive gameplay on all your devices.


Embark on a puzzle-solving adventure with over 10,000 levels and 11 unique variations of the classic logic game. Conquer fantasy worlds, defeat a sorcerer, and become a Sudoku champion with helpful power-ups and a rating system.


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.


This block puzzle game challenges your IQ and strategic thinking. Place blocks on a 9x9 board to clear rows, columns, or squares, unlocking fantasy worlds and earning points. It offers an immersive brain-training experience for all ages.


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.


This is a classic Sudoku game with a unique approach to hints and scoring. It offers downloadable themes, challenging campaigns, and features designed to feel like a real paper puzzle book but enhanced with digital tools. Enjoy unlimited free play and a focus on brain-powered solving.


Engage your mind with classic Sudoku puzzles. This app offers thousands of challenges across four difficulty levels, from easy to expert. Features include daily challenges, intelligent hints, and the ability to play at your own pace without time limits.


Engage your mind with classic Sudoku puzzles. This app offers a clean, modern interface designed to minimize distractions and enhance focus. Enjoy daily challenges and track your progress across multiple difficulty levels.


Master Sudoku with a variety of puzzle sizes and difficulty levels. Personalize your experience with colorful themes and sound effects. Track your fastest times and compete with friends.


This app offers a comprehensive Sudoku experience with numerous customization options, multiple game modes, and difficulty levels. It features a minimalist design, daily challenges, and Apple Pencil integration for a pen-and-paper feel.


Engage in a classic logic puzzle experience with an endless supply of Sudoku challenges. This app offers a sleek, modern interface designed for relaxing brain exercise, allowing you to hone your deduction skills and improve concentration. Track your progress, earn stars, and enjoy customizable gameplay across all your devices.


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.