Best Diagonal Sudoku Apps & Games

237+ iOS apps & games curated and reviewed

4.7 avg rating
19 free apps & games
Updated May 2026

Whether you're new to diagonal sudoku or looking for an upgrade, our curated collection of 237+ iOS apps and games has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Top Picks for Diagonal Sudoku

Diagonal Sudoku: Sudoku X Game#1

Diagonal Sudoku: Sudoku X Game by Ikuhei Kure

Classic Logic Number Puzzle
Editor's Choice
🎮 Games
5.0(1 ratings)
FreeAdsIn-App Purchases
Diagonal Sudoku: Sudoku X Game screenshot 1
Diagonal Sudoku: Sudoku X Game screenshot 2
Diagonal Sudoku: Sudoku X Game screenshot 3

This logic puzzle game introduces a new rule to classic Sudoku: main diagonals must also contain numbers 1-9 without repetition. It offers daily challenges, four difficulty levels, and smart features to enhance gameplay. An optional premium upgrade provides unlimited hints, ad-free play, and exclusive content.

Sudoku: Classic & Variations#2

Sudoku: Classic & Variations by Conceptis Ltd.

No ads. More fun.
Strong Contender
🎮 Games
4.8😊(1K ratings)
FreeIn-App Purchases
Sudoku: Classic & Variations screenshot 1
Sudoku: Classic & Variations screenshot 2
Sudoku: Classic & Variations screenshot 3
Sudoku: Classic & Variations screenshot 4
Sudoku: Classic & Variations screenshot 5

Engage your mind with a variety of Sudoku puzzles, including classic and unique variations like Diagonal, Irregular, and OddEven. Offers a no-ads experience with features to aid gameplay and track progress. Perfect for logic puzzle enthusiasts seeking a mental challenge.

What We Love

  • 👍 No ads
  • 👍 Variety of puzzle types
  • 👍 Intuitive interface
  • 👍 Accurate difficulty ratings

Room to Improve

  • 🐛 Occasional crashes or freezes
  • 💡 Desire for more free/cheaper puzzle packs
  • 💡 Lack of dark mode option
⋆Sudoku#3

⋆Sudoku by Brainium Studios LLC

Classic Sudoku Logic Puzzles
Worth Considering
🎮 Games
4.7😐(161K ratings)
FreeAdsIn-App Purchases
⋆Sudoku screenshot 1
⋆Sudoku screenshot 2
⋆Sudoku screenshot 3
⋆Sudoku screenshot 4
⋆Sudoku screenshot 5
⋆Sudoku screenshot 6

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.

What We Love

  • 🚀 Challenging but not too challenging
  • 👍 Great for learning advanced techniques
  • 👍 Helpful hints that teach strategies
  • 👍 Relaxing and soothing game

Room to Improve

  • 🐛 Frequent crashes and glitches
  • 🔍 Difficult to see numbers and patterns
  • 🔍 Inconsistent difficulty levels

More Diagonal Sudoku apps to explore

4
Samurai Sudoku
Samurai Sudoku
Samurai Sudoku
5 Small Merged Into 1 Big
Free

Experience a unique Sudoku challenge with five interconnected grids. Apply standard Sudoku rules to each 9x9 grid, filling numbers to ensure each row, column, and region has one of each digit. Offers multiple difficulty levels and puzzle variations.

Five overlapping Sudoku gridsFive difficulty levelsVarious Sudoku types (Gattai, Butterfly)
🎮 Games
(374)
free with in-app purchases
5
Sudoku - Brain Puzzle Games
Sudoku - Brain Puzzle Games
Sudoku - Brain Puzzle Games
Jeux de Sudoku quotidiens
Free

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.

5,000+ Classic Sudoku PuzzlesFour Difficulty LevelsDaily Challenges and Rewards
🎮 Games
(301K)
free with in-app purchases
6
Sudoku Puzzle - Brain Games
Sudoku Puzzle - Brain Games
Sudoku Puzzle - Brain Games
Classic Sudoku & Math Games
Free

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.

Thousands of Sudoku puzzlesFour difficulty levels (Easy, Medium, Hard, Expert)Note-taking mode
🎮 Games
(84K)
free with in-app purchases
7
Sudoku ▦
Sudoku ▦
Sudoku ▦
Sudoku (Soduku) Brain Puzzles
Free

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.

Thousands of free puzzlesClassic Sudoku designPencil mode for notes
🎮 Games
(104K)
free with in-app purchases
8
Sudoku・
Sudoku・
Sudoku・
by Optime Software LLC
Free

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.

Dual keypad entrySmart notes (auto-notes & manual deletion)Optional error checking
🎮 Games
(11K)
free with in-app purchases
9
▻Sudoku
▻Sudoku
▻Sudoku
Best games, classic games :)
Free

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.

Smart point systemOnline leaderboardsTrack game runs
🎮 Games
(653K)
free with in-app purchases
10
Sudoku Revolution
Sudoku Revolution
Sudoku Revolution
Hyper, Even Odd, Diagonal
Free

Explore diverse Sudoku variations beyond the classic rules. Enjoy modes like Jigsaw, Even-Odd, Hyper, and X, each offering unique challenges. With hundreds of levels and adjustable difficulty, this app provides endless brain-training fun.

Multiple Sudoku rule variationsJigsaw, Even-Odd, Hyper, and X modesHundreds of levels
🎮 Games
(34)
free with in-app purchases
11
Big Bad Sudoku Book
Big Bad Sudoku Book
Big Bad Sudoku Book
by Bad Weasel, LLC
Free

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.

Smart hints that guide without giving answersDownloadable themes and puzzle book campaignsArcade-style puzzle scoring based on difficulty
🎮 Games
(1.5K)
paid
12
Sudoku· Classic Puzzle Games
Sudoku· Classic Puzzle Games
Sudoku· Classic Puzzle Games
Logic Puzzle Math Number Games
Free

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.

Unlimited Sudoku puzzlesDaily Sudoku challengesHints and step-by-step help
🎮 Games
(60K)
free with in-app purchases
13
Sudoku (Full Version)
Sudoku (Full Version)
Sudoku (Full Version)
by genina.com
Free

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.

4 difficulty levels3 input modesPencil marks with auto fill/erase
🎮 Games
(8.4K)
free with in-app purchases
14
Sudoku
Sudoku
Sudoku
by Mighty Mighty Good Games
$2.99

Engage in a classic logic puzzle experience with a vast collection of unique challenges. Enjoy multiple difficulty levels, helpful tools, and the ability to track your progress and compete with friends. Solve puzzles anytime, anywhere, with features designed to enhance your gameplay.

1000 unique puzzlesFour skill levelsShow incorrect answers
🎮 Games
(556)
free
15
Sudoku·
Sudoku·
Sudoku·
High Quality Sudoku Cards
Free

Engage your mind with a classic Sudoku puzzle game. Enjoy a clean interface and multiple difficulty levels. Track your progress and compete with others.

Daily ChallengeMultiple difficulty levelsNote taking
🎮 Games
(17K)
ad-supported
16
Sudoku: Train Brain Puzzles
Sudoku: Train Brain Puzzles
Sudoku: Train Brain Puzzles
Play Sudoku, enjoy the logic!
Free

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.

Over 20,000 unique Sudoku puzzlesDaily challenges with exclusive rewards8 difficulty levels (6x6 to 16x16)
🎮 Games
(17K)
subscription
17
Sudoku - Classic Math Games
Sudoku - Classic Math Games
Sudoku - Classic Math Games
Sudoku Puzzle and Brain Games
Free

This classic sudoku puzzle game offers a clean, eye-friendly interface with large numbers and adjustable difficulty levels for all ages. Enhance your brain training and problem-solving skills with helpful features like auto-complete, hints, and note-taking.

Large, eye-friendly numbersMultiple difficulty levelsAuto-complete and hints
🎮 Games
(3.8K)
free with in-app purchases
18
Sudoku ∙ Classic Sudoku Games
Sudoku ∙ Classic Sudoku Games
Sudoku ∙ Classic Sudoku Games
Brain Training - Logic Sudoku
Free

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.

Thousands of puzzlesMultiple difficulty levelsDaily challenges
🎮 Games
(17K)
free with in-app purchases
19
Sudoku ◆
Sudoku ◆
Sudoku ◆
Sudoku Logic Puzzle Card Game
Free

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.

Endless Sudoku puzzlesCustomizable board and colorsHints, notes, and auto-complete
🎮 Games
(18K)
free with in-app purchases
20
Sudoku ⋆⋆
Sudoku ⋆⋆
Sudoku ⋆⋆
Unlimited Sudoku Puzzle Games
Free

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.

Unlimited puzzlesCustomizable themesDetailed statistics
🎮 Games
(18K)
free with in-app purchases