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Best Extreme Sudoku Apps & Games

249+ iOS apps & games curated and reviewed

4.7 avg rating
20 free apps & games
Updated October 2026

Every iPhone needs a few good extreme sudoku apps and games. We benchmark 249+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top Extreme Sudoku Apps & Games (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Sudoku Extreme: Easy Hard MathSudoku Extreme: Easy Hard MathFree4.5★ (824)NoYesOct 2026
2Extreme Difficult Sudoku 2500Extreme Difficult Sudoku 2500Free4.5★ (107)YesNoOct 2026
3Killer Sudoku by Sudoku.comKiller Sudoku by Sudoku.comFree4.7★ (217K)YesYesOct 2026
4MultiSudoku: Samurai SudokuMultiSudoku: Samurai SudokuFree4.8★ (2.3K)NoYesOct 2026
5Sudoku World - Brainstorming!!Sudoku World - Brainstorming!!Free4.7★ (1.5K)YesYesSep 2026
6Sudoku ▦Sudoku ▦Free4.7★ (104K)YesNoOct 2026
7Sudoku Master EditionSudoku Master EditionFree4.6★ (7.9K)YesYesOct 2026
8Sudoku ′Sudoku ′Free4.7★ (38K)YesYesOct 2026

Top Picks for Extreme Sudoku

Sudoku Extreme: Easy Hard Math#1

Sudoku Extreme: Easy Hard Math by Pranoy Chowdhury

Classic Number Puzzle Killer
Editor's Choice
🎮 Games
4.5😊(824 ratings)
FreeIn-App Purchases
Sudoku Extreme: Easy Hard Math screenshot 1
Sudoku Extreme: Easy Hard Math screenshot 2
Sudoku Extreme: Easy Hard Math screenshot 3
Sudoku Extreme: Easy Hard Math screenshot 4
Sudoku Extreme: Easy Hard Math screenshot 5
Sudoku Extreme: Easy Hard Math 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

  • 🚀 Smooth gameplay
  • 👍 Customizable themes
  • 🔒 No data tracking
  • 💡 Detailed statistics and graphs
  • 👍 Intuitive user interface
  • 🚀 Responsive and fast
  • 👍 Comprehensive features

Room to Improve

  • 🐛 Difficulty levels not properly calibrated
  • 🐛 Accidental number input issues
  • 💰 Paywall for basic settings
  • 🐛 Inconsistent difficulty across puzzles
Extreme Difficult Sudoku 2500#2

Extreme Difficult Sudoku 2500 by Ohte, Inc.

Heat Your Brain!
Strong Contender
🎮 Games
4.5(107 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.

Killer Sudoku by Sudoku.com#3

Killer Sudoku by Sudoku.com by Easybrain Ltd

Math crossword & number puzzle
Worth Considering
🎮 Games
4.7😐(217K ratings)
FreeAdsIn-App Purchases
Killer Sudoku by Sudoku.com screenshot 1
Killer Sudoku by Sudoku.com screenshot 2
Killer Sudoku by Sudoku.com screenshot 3
Killer Sudoku by Sudoku.com screenshot 4
Killer Sudoku by Sudoku.com screenshot 5
Killer Sudoku by Sudoku.com screenshot 6

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.

What We Love

  • 👍 Challenging game
  • 🚀 Great time-filler
  • 💡 Unique take on Sudoku
  • 👍 Enjoyable experience
  • 👍 Solid game play

Room to Improve

  • 🔍 Too many ads
  • 🔍 Ads interrupt gameplay
  • 🐛 Bugs and glitches
  • 🔍 Excessive ads for free version
  • 🔍 Ads disrupt concentration
  • 🔍 Ads too frequent

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FAQ about Extreme Sudoku

What are the best extreme sudoku apps & games for iPhone?
Sudoku Extreme: Easy Hard Math tops our extreme sudoku apps & games ranking as of October 2026, with a 4.5-star average from 824 App Store ratings, and it's free to download.
Yes — 20 of the top extreme sudoku apps & games we rank are free to download, including Sudoku Extreme: Easy Hard Math and Extreme Difficult Sudoku 2500.
Sudoku Extreme: Easy Hard Math has no ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 249+ extreme sudoku apps & games on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.