Best Classic Sudoku Online Apps & Games

228+ iOS apps & games curated and reviewed

4.7 avg rating
20 free apps & games
Updated May 2026

Whether you're new to classic sudoku online or looking for an upgrade, our curated collection of 228+ 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 Classic Sudoku Online

Classic Sudoku Online#1

Classic Sudoku Online by Tran Viet

Brain Game Online
Editor's Choice
🎮 Games
5.0(1 ratings)
FreeAdsIn-App Purchases
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Engage in a competitive online puzzle game where players race to complete a picture. This game requires a stable internet connection to participate in matches and challenge other players.

⋆Sudoku#2

⋆Sudoku by Brainium Studios LLC

Classic Sudoku Logic Puzzles
Strong Contender
🎮 Games
4.7😐(161K ratings)
FreeAdsIn-App Purchases
⋆Sudoku screenshot 1
⋆Sudoku screenshot 2
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⋆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
Sudoku - Brain Puzzle Games#3

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

Jeux de Sudoku quotidiens
Worth Considering
🎮 Games
4.8😐(301K ratings)
FreeAdsIn-App Purchases
#83in Games
Sudoku - Brain Puzzle Games screenshot 1
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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

More Classic Sudoku Online apps to explore

4
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
5
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
6
▻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
7
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
8
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
9
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
10
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
11
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
12
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
13
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
14
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
15
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
16
Sudoku Fever - Logic Games
Sudoku Fever - Logic Games
Sudoku Fever - Logic Games
Classic sudoku logic puzzles
Free

This app offers a classic Sudoku experience with various puzzle types and difficulty levels. Track your progress with statistics, enjoy daily challenges, and customize your gameplay with themes and helpful tools. Become a Sudoku master anytime, anywhere.

Multiple Sudoku puzzle typesFour difficulty levelsDaily new puzzles
🎮 Games
(250)
free with in-app purchases
17
Sudoku Deluxe® Social
Sudoku Deluxe® Social
Sudoku Deluxe® Social
Classic Soduko and Great Tools
Free

This app offers a premium Sudoku experience with thousands of puzzles across numerous books. It includes advanced tools, tutorials, and social features like team tournaments and playing with friends. Customize your game with unique themes and enjoy HD graphics.

Thousands of Sudoku puzzlesAdvanced auto-pencil marksBranching tools
🎮 Games
(736)
free with in-app purchases
18
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
19
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
20
Sudoku - online game
Sudoku - online game
Sudoku - online game
Solve sudoku puzzles online
Free

Engage in classic Sudoku puzzles with multiple difficulty levels and a unique online multiplayer mode. Enjoy a clean, paper-like interface with customizable themes and helpful tools like auto-save and error checks. Track your progress with detailed statistics and compete with others globally.

Thousands of Sudoku puzzles4 difficulty levelsOnline multiplayer
🎮 Games
(11)
ad-supported