Sudoku ▦ is one of the best loved and most popular puzzle games in the world. Now you can play the classic paper and pencil puzzle game right on your phone! With our simple and elegant design, Tripledot’s Sudoku▦ for mobile is the best way to play this timeless classic.

Challenge your problem-solving skills with an expert-level game or take a break with a quick game on easy mode. Whether you’re a hyper competitive puzzle solver or just looking for a way to relax, a beginner or a master puzzler, Tripledot’s Sudoku ▦ will let you play the game your way.
Choose from four different difficulty levels, and customise your experience with features to help or challenge you.

Key Features:
- Thousands of well-formed, totally free puzzles
- The classic Sudoku design, beautifully recreated on your phone
- Use the pencil to make notes right on the puzzle
- Highlight duplicates to help you solve the puzzle
- Challenge yourself by limiting yourself to three mistakes
- Use hints to help you find your way through difficult puzzles - - Play Sudoku your way with our finely tuned customisation
- Four perfectly crafted difficulty levels: Easy, Medium, Hard, and Expert.
- Highlight duplicates to avoid repeating numbers in a row, column, and block

- Automatically Check for Mistakes: Enable auto-check to easily spot your mistakes, or disable it to play a more free-form game
- Optional Mistake Limit: challenge yourself to play a perfect game, or relax with unlimited mistakes
- Pencil mode: Use the pencil mode to make notes on each cell, which automatically update as you play the game
- Statistics: See your best times and streaks for every difficulty level
- Autosave: Your puzzles save as you go, so you can come back anytime
- Hints: Hints can guide you through the puzzle when you are stuck
- Eraser: Made a mistake? Get rid of it by using the eraser feature
- Unlimited undo's: Eliminate errors using our unlimited undo feature
- Customize appearance: Choose from six different beautiful skins for a game that is as easy on the eyes as it is to play

By using Sudoku ▦, you agree to our Terms of Use and Community Guidelines available at

Questions? Email for help!

What’s New

Version 2.2.0

Hey there, Puzzlers!

We’ve got an exciting new feature to share with you!

Your Game Insights - finally you get to see just how you compare to all other players - see mistakes, hints, solving times and get a unique analysis of your game.

Happy puzzling, and if you have any feedback for us, please share your love with a review, or let us know at

Ratings and Reviews

4.7 out of 5
71.1K Ratings

71.1K Ratings

Concerned Greatgrandma ,

Sudoku: Loads of Fun & Therapeutic too!

After having had 4 mini-strokes, I like to keep my mind active. I have trouble with my short term memory but with sudoku I can see where all the numbers are & figure out where to place the next number. If I can’t find where one number goes I just look for a different number & keep on going until the game is totally completed. I used to buy books of sudoku games & pencils by the box, along with a pencil sharpener & a good eraser; but this is so much better! I never have to worry about breaking the point off of my pencil, Or spilling the pencil sharpener’s shavings all over the place, Or forgetting where I put the puzzle book or my pencil when I want to play a game. It is right here on my phone & even if I receive a phone call, I can talk to whom ever & then go right back to my game without missing a beat! I LOVE it! Thanks!!!

Rolffot ,

Wonderful way to be!

To whom may concern:
Are you old enough that you have enough time in your hands and you do not know what to do with it? Are willing to work on you own? Or perhaps you want to slow getting old before your time comes? Are there reasons to live a life more engaging? Do you ever wander if is there things to do, besides waiting to die from old age? If you answer yes to any of the these questions, perhaps you could be in the way of discovering the best times of your whole life. This is an activity where you could be learning at lot about how powerful and creative your mind could be. You only need to give it a try, and you’ll set up yourself in a pathway never imagined, a beautiful experience never forgotten. Once you learn and experience the game, you will be hooked by the feeling of it. Like anything constructive, you’ll love it! Thanks

tmacpluto ,


When I first got this game an ad would pop up right as a game was starting and after I competed the game, a little annoying but okay because after 5 seconds I was able to skip the ad. Now the ad pops up the same and after a few seconds the 'x' appears and I click it then I still have to wait the 30 seconds for the ad to finish. The worst part is that when the ad pops up at the start of the game my game timer is still counting and for someone who likes to try and beat my old times this adds 30 seconds.
The developers fixed this problem and I am happy to change y review to 5 stars!

Developer Response ,

Hello tmacpluto,

Thanks for your review. We very much appreciate any feedback and are constantly working to improve our app. We have fixed this issue in our latest release: the timer will now be paused whenever an ad is shown.

If you have any further feedback, please feel free to reach out to us at


Team Tripledot.


Tripledot Studios Limited
190.3 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Japanese, Russian

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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