Best Extreme Sudoku Apps & Games

236+ iOS apps & games curated and reviewed

4.7 avg rating
20 free apps & games
Updated May 2026

Every iPhone needs a few good extreme sudoku apps. We benchmark 236+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Top Picks for Extreme Sudoku

Extreme Difficult Sudoku 2500#1

Extreme Difficult Sudoku 2500 by Ohte, Inc.

Heat Your Brain!
Editor's Choice
๐ŸŽฎ Games
4.4(97 ratings)
FreeAds
Extreme Difficult Sudoku 2500 screenshot 1
Extreme Difficult Sudoku 2500 screenshot 2
Extreme Difficult Sudoku 2500 screenshot 3
Extreme Difficult Sudoku 2500 screenshot 4
Extreme Difficult Sudoku 2500 screenshot 5

This game offers a vast collection of challenging Sudoku puzzles across five distinct categories. With 2500 puzzles in total, it's designed to test and enhance your logical thinking skills. It's completely free to play and aims to help you become a Sudoku genius.

Sudoku Extreme: Classic Number#2

Sudoku Extreme: Classic Number by Pranoy Chowdhury

Hard classic master edition
Strong Contender
๐ŸŽฎ Games
4.5๐Ÿ˜Š(781 ratings)
FreeIn-App Purchases
Sudoku Extreme: Classic Number screenshot 1
Sudoku Extreme: Classic Number screenshot 2
Sudoku Extreme: Classic Number screenshot 3
Sudoku Extreme: Classic Number screenshot 4
Sudoku Extreme: Classic Number screenshot 5
Sudoku Extreme: Classic Number screenshot 6

Engage your mind with classic Sudoku puzzles designed for all skill levels. Enjoy a customizable, ad-free experience with various themes and difficulty settings. Track your progress and stats while sharpening your logic skills.

What We Love

  • ๐Ÿš€ Smooth gameplay
  • ๐Ÿ‘ Customizable themes
  • ๐Ÿ”’ No data tracking
  • ๐Ÿ’ก Detailed statistics and graphs

Room to Improve

  • ๐Ÿ› Difficulty levels not properly calibrated
  • ๐Ÿ› Accidental number input issues
  • ๐Ÿ’ฐ Paywall for basic settings
MultiSudoku: Samurai Sudoku#3

MultiSudoku: Samurai Sudoku by Conceptis Ltd.

No ads. More fun.
Worth Considering
๐ŸŽฎ Games
4.8๐Ÿ˜Š(2.2K ratings)
FreeIn-App Purchases
MultiSudoku: Samurai Sudoku screenshot 1
MultiSudoku: Samurai Sudoku screenshot 2
MultiSudoku: Samurai Sudoku screenshot 3
MultiSudoku: Samurai Sudoku screenshot 4
MultiSudoku: Samurai Sudoku screenshot 5

This app offers a variety of challenging Sudoku puzzles with different overlapping grid configurations. It provides a no-ads gaming experience with features to help track progress and sharpen logic skills. Enjoy hours of intellectual challenge with continuously updating content.

What We Love

  • ๐Ÿ’ก Challenging and engaging puzzles
  • ๐Ÿ‘ Intuitive and user-friendly interface
  • ๐Ÿš€ No ads or interruptions
  • ๐Ÿš€ Weekly free puzzle updates

Room to Improve

  • ๐Ÿ’ฐ Expensive in-app purchases for additional puzzles
  • ๐Ÿ” Small text size on larger puzzles
  • ๐Ÿ” Lack of a dark mode option

More Extreme Sudoku apps to explore

4
Sudoku โ–ฆ
Sudoku โ–ฆ
Sudoku โ–ฆ
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
๐ŸŽฎ Games
(104K)
free with in-app purchases
5
Sudoku Master Edition
Sudoku Master Edition
Sudoku Master Edition
Daily Sudoku & Logic Puzzles
Free

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.

Customizable themes and fontsMultiple game modes (Lightning, Mistake, Classic, Zen)5 difficulty levels
๐ŸŽฎ Games
(7.9K)
free with in-app purchases
6
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
๐ŸŽฎ Games
(213K)
free with in-app purchases
7
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
๐ŸŽฎ Games
(301K)
free with in-app purchases
8
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
๐ŸŽฎ Games
(72K)
free with in-app purchases
9
Sudoku.com - Number Games
Sudoku.com - Number Games
Sudoku.com - Number Games
Classic sudoku brain puzzle
Free

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.

Thousands of classic Sudoku puzzlesDaily Challenges and Seasonal EventsHints and Auto-Check features
๐ŸŽฎ Games
(1.8M)
free with in-app purchases
10
Sudoku World - Brainstorming!!
Sudoku World - Brainstorming!!
Sudoku World - Brainstorming!!
Logic puzzles with numbers
Free

Play an unlimited number of randomly generated Sudoku puzzles with various new puzzle types and difficulty levels. Enjoy multiplayer challenges, track your progress, and utilize smart tools for an enhanced experience.

Unlimited randomly generated puzzlesMultiple Sudoku variants (X, Super, Jigsaw, 16x16, Samurai)Multiplayer mode
๐ŸŽฎ Games
(1.4K)
free with in-app purchases
11
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
๐ŸŽฎ Games
(84K)
free with in-app purchases
12
Sudoku Mega Bundle
Sudoku Mega Bundle
Sudoku Mega Bundle
Hundreds of Sudoku variations
Free

Explore hundreds of unique Sudoku variations beyond the classic grid. Challenge yourself with diverse puzzle types, difficulty levels, and helpful tools. Enjoy customizable gameplay and track your progress with leaderboards and achievements.

Hundreds of unique Sudoku variationsMultiple difficulty levelsHints and smart notes
๐ŸŽฎ Games
(2.8K)
free with in-app purchases
13
Blockudoku - Block Puzzle Game
Blockudoku - Block Puzzle Game
Blockudoku - Block Puzzle Game
Blast blocks on sudoku grid!
Free

This game blends sudoku and block puzzle mechanics on a 9x9 grid. Match blocks to clear lines and squares, aiming to keep the board clean and achieve high scores. Engage in daily challenges, seasonal events, and tournaments for unique rewards and competition.

9x9 grid block placementClear lines and squaresDaily Challenges
๐ŸŽฎ Games
(654K)
free with in-app purchases
14
Super Sudoku - Brainstorming!!
Super Sudoku - Brainstorming!!
Super Sudoku - Brainstorming!!
Logic puzzles with numbers
Free

Engage your mind with an endless supply of randomly generated logic puzzles. Explore various Sudoku types, challenge friends online, and track your progress with detailed statistics. Features include smart notes, hints, and undo/redo options for a seamless puzzle-solving experience.

Unlimited randomly generated puzzlesMultiple Sudoku types (Classic, X, Super, Jigsaw, Samurai)Online multiplayer mode
๐ŸŽฎ Games
(1.4K)
free with in-app purchases
15
โ‹†Sudoku
โ‹†Sudoku
โ‹†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
๐ŸŽฎ Games
(161K)
free with in-app purchases
16
Expert Sudoku Book Stress Free
Expert Sudoku Book Stress Free
Expert Sudoku Book Stress Free
Samurai Hyper Jigsaw Cross X
Free

This app offers a vast collection of over 160,000 Sudoku puzzles across four difficulty levels and four unique variations: X Sudoku, Hyper Sudoku, Jigsaw Sudoku, and Samurai Sudoku. Enjoy a relaxing, timer-free experience with helpful features like undo, pencil marks, and auto-highlighting.

160,000+ Sudoku puzzlesFour difficulty levelsX Sudoku
๐ŸŽฎ Games
(1.6K)
free with in-app purchases
17
Sudoku: Classic & Variations
Sudoku: Classic & Variations
Sudoku: Classic & Variations
No ads. More fun.
Free

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.

Six Sudoku variationsNo adsWeekly bonus puzzles
๐ŸŽฎ Games
(1K)
free with in-app purchases
18
Killer Sudoku - Brain Games
Killer Sudoku - Brain Games
Killer Sudoku - Brain Games
Board puzzles for mindfulness
Free

Engage your mind with a logic-based number puzzle game. Place digits 1-9 into grids, ensuring each appears once per row, column, and mini-grid. Enjoy daily challenges, customizable themes, and intelligent hints for a brain-boosting experience.

Multiple difficulty levelsDaily challenges and trophiesPencil mode for notes
๐ŸŽฎ Games
(26K)
free with in-app purchases
19
Sudoku โ€ฒ
Sudoku โ€ฒ
Sudoku โ€ฒ
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
๐ŸŽฎ Games
(37K)
free with in-app purchases
20
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
๐ŸŽฎ Games
(1.5K)
paid