Best Iodoku Apps & Games

241+ iOS apps & games curated and reviewed

4.7 avg rating
19 free apps & games
Updated May 2026

Sudoku.com is the household name in iodoku, but it's far from the only option. We track 241+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Top Picks for Iodoku

Sudoku.com - Number Games#1

Sudoku.com - Number Games by Easybrain Ltd

Classic sudoku brain puzzle
Editor's Choice
🎮 Games
4.8😐(1.8M ratings)
FreeAdsIn-App Purchases
#5in Games
Sudoku.com - Number Games screenshot 1
Sudoku.com - Number Games screenshot 2
Sudoku.com - Number Games screenshot 3
Sudoku.com - Number Games screenshot 4
Sudoku.com - Number Games screenshot 5
Sudoku.com - Number Games screenshot 6

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.

What We Love

  • 🚀 Smooth gameplay
  • 👍 Customizable settings
  • 💡 Helpful hints and strategies
  • 🎨 Appealing visual design

Room to Improve

  • 🔍 Cluttered UI with too many ads
  • 🔋 High battery drain
  • 🐛 Bugs causing crashes and freezes
Braindoku: Sudoku Block Puzzle#2

Braindoku: Sudoku Block Puzzle by Murka Games Limited

Best IQ Game & Brain Training
Strong Contender
🎮 Games
4.7😞(19K ratings)
FreeAdsIn-App Purchases
Braindoku: Sudoku Block Puzzle screenshot 1
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Braindoku: Sudoku Block Puzzle screenshot 3
Braindoku: Sudoku Block Puzzle screenshot 4
Braindoku: Sudoku Block Puzzle screenshot 5

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.

What We Love

  • 👍 Great game
  • 🤔 Challenging and makes you think
  • 🧠 Enjoyable brain exercise
  • 💡 Interesting concept combining Sudoku and Tetris

Room to Improve

  • 🤬 Too many ads
  • 🐛 Game freezing/crashing issues
  • 😡 Unfair game ending mechanics
Iodoku#3

Iodoku by David Seppi

Elegant Sudoku, Evolved.
Worth Considering
🎮 Games
5.0(1 ratings)
FreeAdsIn-App Purchases
Iodoku screenshot 1
Iodoku screenshot 2
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Iodoku screenshot 5

This intelligent Sudoku app adapts to your skill level with AI-powered puzzles and a personal coach. Learn advanced techniques, track your progress, and enjoy a clean, customizable interface. Offers both free and premium experiences.

More Iodoku apps to explore

4
Sudoku Master - Brain Games
Sudoku Master - Brain Games
Sudoku Master - Brain Games
Fun classic math match number
Free

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.

Thousands of Sudoku puzzlesFour difficulty levelsDaily Challenges
🎮 Games
(5K)
free with in-app purchases
5
Sudoku by Joseph
Sudoku by Joseph
Sudoku by Joseph
Jigsaw Killer Samurai Puzzles
Free

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.

12 unique Sudoku variantsClassic, Jigsaw, and Killer SudokuDaily Challenge puzzles
🎮 Games
(2.4K)
freemium
6
Merge Hexa Puzzle - Merged Block & Sudoku Quest
Merge Hexa Puzzle - Merged Block & Sudoku Quest
Merge Hexa Puzzle - Merged Block & Sudoku Quest
by Duc Phuong Tran
Free

A block puzzle game where you merge hexagonal blocks to create higher numbers and clear the board. Strategically drag and combine groups of three or more identical blocks to achieve higher levels and remove them.

Hexagon block mergingUpgrade blocks to higher numbersClear blocks by matching three or more
🎮 Games
(271)
free with in-app purchases
7
Wood Block 99 - Sudoku Puzzle
Wood Block 99 - Sudoku Puzzle
Wood Block 99 - Sudoku Puzzle
Fun fill cube blast IQ game!
Free

This wood-style puzzle game combines Sudoku and block-filling mechanics. Strategically place blocks to clear lines and squares, aiming for combos and daily challenges. It offers a relaxing, offline experience to improve spatial skills and relieve stress.

Wood-style block puzzleSudoku and block-filling mashupTemporary block storage grid
🎮 Games
(4.1K)
free with in-app purchases
8
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
9
Sudoku Blocks: Brain Puzzles
Sudoku Blocks: Brain Puzzles
Sudoku Blocks: Brain Puzzles
Fun block doku puzzle game!
Free

This game combines block puzzle mechanics with Sudoku logic. Place various shaped blocks on a 9x9 grid to clear lines or 3x3 boxes, aiming to achieve a high score. It offers a simple yet challenging experience for all ages.

Place various shaped blocks on a 9x9 gridClear lines (rows/columns) or 3x3 Sudoku boxesAchieve high scores
🎮 Games
(5.2K)
free
10
Block Puzzle - Sudoku Style
Block Puzzle - Sudoku Style
Block Puzzle - Sudoku Style
Official Version
Free

Engage your mind with this addictive block puzzle game. Strategically place pieces on a 9x9 grid to clear lines and 3x3 boxes, earning combos and streaks for high scores. Play as long as you can to challenge your brain and improve your personal best.

9x9 Sudoku grid placementClear vertical linesClear horizontal lines
🎮 Games
(106K)
ad-supported
11
Sudoku - Classic Sudoku Games
Sudoku - Classic Sudoku Games
Sudoku - Classic Sudoku Games
Sudoku (Soduku) Brain Puzzles
Free

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.

Endless free Sudoku puzzlesFour difficulty levelsHints
🎮 Games
(19K)
ad-supported
12
Mathdoku+ Sudoku Style Math & Logic Puzzle Game
Mathdoku+ Sudoku Style Math & Logic Puzzle Game
Mathdoku+ Sudoku Style Math & Logic Puzzle Game
by TPG TECNOLOGIA DA INFORMACAO LTDA
Free

This brain teaser combines Sudoku-style logic with math operations. It offers over 700 levels across various grid sizes, perfect for sharpening logic and math skills for all ages. Features include hints, a tutorial, and support for multiple devices.

Over 700 levelsSudoku-style logicMath operations
🎮 Games
(429)
free with in-app purchases
13
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
14
Killer Sudoku!
Killer Sudoku!
Killer Sudoku!
Logic puzzles for your brain
Free

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.

Dual keypads for notes and answersMulti-square note entryRearrangeable combination lists
🎮 Games
(1.9K)
free with in-app purchases
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
Killer Sudoku by Sudoku.com
Killer Sudoku by Sudoku.com
Killer Sudoku by Sudoku.com
Math crossword & number puzzle
Free

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.

Killer Sudoku puzzlesThousands of levelsDaily challenges
🎮 Games
(213K)
free with in-app purchases
17
⋆Sudoku
⋆Sudoku
⋆Sudoku
Classic Sudoku Logic Puzzles
Free

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.

Smart hint system teaches logicFive difficulty levelsDaily puzzle challenges
🎮 Games
(161K)
free with in-app purchases
18
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
19
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
20
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