⋆Sudoku

⋆Sudoku

Classic Sudoku Logic Puzzles

161K ratings
702 reviews
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • February 11, 2011
  • June 29, 2026

Features

⋆Sudoku screenshot #1 for iPhone
⋆Sudoku screenshot #2 for iPhone
⋆Sudoku screenshot #3 for iPhone
⋆Sudoku screenshot #4 for iPhone
⋆Sudoku screenshot #5 for iPhone
⋆Sudoku screenshot #6 for iPhone
⋆Sudoku screenshot #7 for iPhone
iphone
ipad
🖼️Get Icon
Icons↘︎

About

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 logic
Five difficulty levels
Daily puzzle challenges
Customizable board and themes
Progress tracking and statistics
Auto-fill and auto-check options
Show original description

What users say

See all reviews

What's New in ⋆Sudoku

4.5.28

June 29, 2026

Checkout the new updates from our team and thanks for playing!

1

In-App Purchases

$11.99

Remove Ads

Enjoy Sudoku without ads

User reviews

Decent, but could use improvements

I like the various options for play, whether it is selecting a single cell and adding multiple notes, or selecting particular number and easily entering it into multiple cells, either as notes or solved cells. What I DON’T like is how the game “locks” cells once a number has been entered. You are prevented from adding a note to a solved cell, and you must remove the number in order to add the note, which makes sense. But what doesn’t make sense is that you CAN enter a different number into an already solved sell, overwriting the number already there. This means that you can inadvertently place a number in a wrong cell by accident when playing against the clock, and you may not realize it until the puzzle crashes and you can’t solve it. You have to try to go back and see what you did wrong, or more frustratingly, restart the whole game. Either way, your time score gets ruined. Next, I often find that, when trying to switch between entering notes and entering numbers, touching the toggle button doesn’t register, so I either end up entering the opposite of what I expected and have to stop and fix it, or the game thinks I touched some “blank space” around the puzzle and opens up the bottom menu, which prevents continuing game play until you close the menu, but the game clock still continues, again destroying your time score. Finally, the leap from Hard level games to Expert level is beyond exponential and doesn’t provide the same degree of advancement as between the other levels. Speaking of the Expert level, more than half of the games that I have played recently have required Trial And Error to solve it, which is not an appropriate solution method. One recent game even did it on a cell with three notes in it, which is an insane amount of trial and error. Lastly, if you are interested in tracking your scores against others, know that it is possible to cheat. Look at the global score board, and you will see games that have been completed in seconds, which is impossible, unless you take a screen shot, pause the app, solve the game offline, then go back and enter the solution. Not sure there is any way for the developers to prevent this, so it is more of an annoyance than anything else. With all of that said, I have enjoyed this app through all of the lower levels, despite some of the technical issues, but once you get good enough at the Hard level, I wouldn’t bother to continue.
Show more

Long press gone

Why would you remove features from the game?

Why worse?

First, I have not found a better version so go ahead and download. However it has been updated to worse than before, especially as far as the hints. Now, oftentimes it just says to guess (‘trial and error’) as a hint!?! No more hints of finned or sashimi swordfish, no XY WING, etc etc. It was great for improving!!! Also, plus/minus - I agree adjusting to new fill options awkward but some new options can be quicker.
Show more

Favorite Sudoku Game but Sometimes the Sounds Go Off for No Reason

This is my favorite sudoku game, but sometimes the sounds go off for no reason. It’s weird. I think it’s some kind of glitch. I really love the paint feature!

Locked up

Covered my screen with an ad that locked up my iPad. Moving on.

Developer apps

User experience

🐞

Reported Bugs

5 issues

Puzzle completion status not updating correctly

Bug

Floating number feature not working as expected

Bug

Scores not displaying properly on leaderboard

Bug

Game freezing or crashing on certain devices

Bug

Inability to play music in the background

Bug

Requested Features

6 requests

Option to disable auto-check for errors

Feature

Ability to customize number colors and backgrounds

Feature

More granular difficulty settings between Hard and Expert

Feature

Ability to access past daily puzzles

Feature

Family sharing for ad-free version

Feature

Clearer explanation of scoring system

Feature

FAQ

What is this app?

This app provides a classic Sudoku puzzle experience with a clean, modern design. It offers endless number puzzles across five difficulty levels, a smart hint system that explains the logic behind solutions, and daily challenges to keep your mind engaged. The app aims to provide fun, relaxation, and a mental challenge for players of all skill levels.

What are the key features of this Sudoku app?

Key features include the world's most advanced Sudoku learning tool and hint system that teaches logic, five balanced difficulty levels, daily puzzle challenges, customizable grid styles and backdrops, and progress tracking with statistics. It also offers convenient input systems like auto-fill notes and auto-check errors.

Is this app free to download and play?

Yes, the app is free to download and play. It offers a free experience with in-app purchases, which may include additional features or ways to enhance gameplay. The core Sudoku puzzles and learning tools are available without charge.

What devices is this app compatible with?

This is a universal app designed to look great on both iPhone and iPad devices. It supports both portrait and landscape play options, with additional customization for left-handed players in landscape mode. It is also iPad keyboard compatible.

How does the hint system work?

The smart hint system goes beyond simply providing answers. It helps you learn and improve your Sudoku skills by teaching you the specific logic and techniques needed to solve each puzzle. Hints are unique for every puzzle and presented with easy-to-follow animations and visuals.