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Best Cool Online Sudoku Apps & Games

222+ iOS apps & games curated and reviewed

4.7 avg rating
20 free apps & games
Updated June 2026

Sudoku is the household name in cool online sudoku, but it's far from the only option. We track 222+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Top Picks for Cool Online Sudoku

Sudoku - Brain Puzzle Games#1

Sudoku - Brain Puzzle Games by OAKEVER GAMES PTE. LTD.

Jeux de Sudoku quotidiens
Editor's Choice
🎮 Games
4.8😐(301K ratings)
FreeAdsIn-App Purchases
#88in Games
Sudoku - Brain Puzzle Games screenshot 1
Sudoku - Brain Puzzle Games screenshot 2
Sudoku - Brain Puzzle Games screenshot 3
Sudoku - Brain Puzzle Games screenshot 4
Sudoku - Brain Puzzle Games screenshot 5
Sudoku - Brain Puzzle Games screenshot 6

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.

What We Love

  • 🚀 Fun game with different difficulty levels
  • 👍 Minimal ads between games
  • 🧠 Challenges the mind
  • 🌟 Useful features like pencil mode and hints

Room to Improve

  • 🔍 Unclear purpose of tickets
  • 🔀 Automatic number selection in map mode
  • 🔧 Auto-complete feature changed to on/off
Sudoku Puzzle - Brain Games#2

Sudoku Puzzle - Brain Games by Guru Smart Holding Limited

Classic Sudoku & Math Games
Strong Contender
🎮 Games
4.9😊(84K ratings)
FreeAdsIn-App Purchases
#68in Games
Sudoku Puzzle - Brain Games screenshot 1
Sudoku Puzzle - Brain Games screenshot 2
Sudoku Puzzle - Brain Games screenshot 3
Sudoku Puzzle - Brain Games screenshot 4
Sudoku Puzzle - Brain Games screenshot 5
Sudoku Puzzle - Brain Games screenshot 6

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.

What We Love

  • 🚀 Great classic sudoku
  • 👍 Excellent wifi-free sudoku puzzling
  • 👍 Fun and entertaining
  • 👍 Awesome brain work out!

Room to Improve

  • 🔍 Good game lots of ads
  • 🔍 Some level inconsistencies!
  • 🔍 Overrides background sounds

More Cool Online Sudoku apps to explore

4
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
5
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
6
Sudoku SE
Sudoku SE
Sudoku SE
by Mighty Mighty Good Games
Free

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.

Handcrafted puzzlesFour skill levelsShow incorrect answers
🎮 Games
(1.8K)
ad-supported
7
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
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 ′
Sudoku free of distraction
Free

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.

Unlimited Sudoku gridsOffline play6 difficulty levels
🎮 Games
(37K)
free with in-app purchases
10
Sudoku - No ads
Sudoku - No ads
Sudoku - No ads
sudoku solver & sudoku classic
Free

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.

Multiple difficulty levelsBeautiful and concise interfaceGame history tracking
📚 Education
(3.5K)
subscription
11
Sudoku - Daily Puzzles
Sudoku - Daily Puzzles
Sudoku - Daily Puzzles
Daily Sudoku Puzzles Game
Free

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.

Thousands of unique Sudoku puzzlesMultiple difficulty levels (Easy to Expert)Daily puzzles for brain training
🎮 Games
(3.7K)
free with in-app purchases
12
Microsoft Sudoku
Microsoft Sudoku
Microsoft Sudoku
Microsoft Sudoku
Free

Enjoy classic and unique Sudoku puzzles with adjustable difficulty. Engage in daily challenges, track your progress, and customize your gameplay with various themes and settings. An optional premium subscription removes ads and unlocks past challenges.

Classic and Irregular Sudoku modes6 difficulty levelsDaily Challenges with badges
🎮 Games
(6.8K)
free with in-app purchases
13
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
14
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
15
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
16
Sudoku by Staple Games
Sudoku by Staple Games
Sudoku by Staple Games
by Staple Games
Free

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.

Daily ChallengeFour difficulty levelsNumber removal assistance
🎮 Games
(100K)
ad-supported
17
Sudoku Blast!
Sudoku Blast!
Sudoku Blast!
5-min sudoku, number fun
Free

This app offers a clean and focused sudoku experience with thousands of handcrafted puzzles for all skill levels. Enjoy a calm environment for brain training, with options for offline play and ad-free solving. Learn strategies with smart hints and daily challenges.

Thousands of handcrafted sudoku puzzlesMinimalist and clean designOptional ad-free mode
🎮 Games
(72K)
free with in-app purchases
18
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
19
Sudoku - Number Brain Games
Sudoku - Number Brain Games
Sudoku - Number Brain Games
Classic Sudoku Math Puzzle
Free

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.

Thousands of daily Sudoku puzzlesFour difficulty levelsNotes (Pencil) mode
🎮 Games
(9.2K)
free with in-app purchases
20
Sudoku :)
Sudoku :)
Sudoku :)
Soduku Logic Puzzle Card Game
Free

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.

Four difficulty settingsCustomizable background colorsEmoji number option
🎮 Games
(58K)
free with in-app purchases