SUDOKU MASTER EDITION takes the world famous number puzzle to new heights with its minimalist, modern, and feature-rich design.

We meticulously designed the game from the ground up: whether you’re a seasoned Sudoku addict or new to this easy to learn, but hard to master brain teaser - our version of this classic logic puzzle can be customized to your needs and preferences, including some you didn’t even know you needed!

Download the world’s #1 number puzzler for FREE and enjoy a plethora of features & cool extras like:

* FONTS: 26 finely curated ones to be exact.
* COLORS: Our modern custom color palette makes it easier for you to find the right hue for your numbers, notes, and highlights.
* LIGHTNING MODE: Do you feel like filling in a bunch of 4’s in a row? Hit the new Lightning Bolt icon, select a number, and tap away!
* MISTAKE MODE: When enabled, it bounces out incorrect numbers.
* CLASSIC MODE: You can now leave your mistakes on the board.
* GAME BOARD: Choose from 2 sizes - they’re both equally minimalistic and pleasing on the eyes!
* LEVELS: Featuring 5 levels, ranging from “Easy” to “Master”.
* GRID STYLE: Adjust the line weight to whatever pleases YOUR eyes.
* ZEN MODE: Click on the lotus flower to remove ALL FEATURES, including the timer, points & error count, for the ultimate distraction-free gameplay. Relax :)
* NOTES: Leave a note if you’re uncertain - you can even select to have obsolete notes removed.
* APP ICONS: Choose from 13 icons to match YOUR home screen.
* DARK THEME: Because night owls enjoy a good game of Sudoku as well.
* MUSIC: We collaborated with ambient-music mastermind EARLYGUARD to provide you with a relaxing, zen soundtrack.
* HIGHLIGHT HELPER: Select any square and the corresponding row and column will highlight automatically to improve your focus.
* FORCE TOUCH: Start a new game with two taps. We timed it - you’ll be playing in 2 seconds flat!


APPLE PENCIL INTEGRATION (Requires compatible iPad & Apple Pencil):

- PEN & PAPER EXPERIENCE: Jot down the numbers & notes with your APPLE PENCIL - directly into the square! SUDOKU MASTER EDITION’s latest handwriting integration recognizes everyone’s individual handwriting.
- NOTEPAD: Jot down ideas, sketches, or anything else that crosses your mind. Undo, redo, erase, and delete with a single tap.

No Apple Pencil? No need to scribble? No problem. Just toggle the notepad off & enjoy the game.

If you’re a leftie you’ll be pleased to find an option under SETTINGS to move your Notepad to the left side of the screen.
(Requires compatible iPad & Apple Pencil).

Finally, SUDOKU MASTER EDITION offers you everything you love about iOS, like Game Center Integration, beautifully designed icons to go in-line with iOS, and a contemporary interface.

And because we REALLY love Sudoku, we already have some incredible future features and updates in the works, so stay tuned!

What’s New

Version 5.01

As it turns out, we took our new algorithm from “too easy” to “welcome to MENSA” difficulties - sorry about that.

We’re reverting the EASY and MODERATE difficulty levels back to their old algorithms, to give both newcomers & speed players a chance to enjoy their favourite Sudoku game in the iOS Store. All other difficulty levels contain hand-picked puzzles, featuring our new algorithm - so if you ever find yourself wanting to up the ante 9x9 style, well, we have 3 difficulty levels for you :)

As usual, We would like to thank everyone who has supported us by downloading our little app, sending us bug reports, feature requests, and general feedback. If you happen to come across any bugs, please contact us at Send screenshots of issues if at all possible. We usually respond the same day :)

Ratings and Reviews

4.7 out of 5
3.8K Ratings
3.8K Ratings
dworsnup ,

Bad scoring system

I'm new to Sudoku, so I'm not sure how it would typically be scored, but the way this game does it is silly. When you play a tile, the name of the tile is multiplied by a number which decreases as the timer counts up. This scoring system allows for a user to be presented with the "same" board as another, execute the exact same sequence of moves with the same timing, and come to a different score. To do this, all you must do is permute all of the tile names, i.e., replace all 1s with 9s, all 2s with 1s, all 3s with 2s and so on. This doesn't really change the board since you could replace the numbers with letters or glyphs and the structure of the soduko board remains the same - there is still one one of each type of tile in each row, column, and square.

For a perfectionist like myself, this scoring system causes me to constantly restart games until I get that perfect start that allows me to play a bunch of 9s in the beginning. Ideally, the tiles would count evenly, since it doesn't really matter which tiles you are playing. If you are playing tiles at all then you're making progress. My suggestion would be to instead measure how sparse the board is (since play is more difficult the fewer tiles on the board) and multiply this value by the value determined by the timer. There are of course other options. I just don't like the way it is done now.

Other than that, this app is awesome. 4/5

vaficionado ,

Was much better before version 3...

This latest update has introduced a bunch of bugs. Some are so fundamental as to make the game almost unusable now - it doesn’t remove notes as it’s supposed to when a number is locked in to a row, and just now I noticed it actually let me enter the number 2 twice in one row. The auto-fill function (for when there’s just one number in a segment remaining) has also stopped working properly, and all of a sudden the Apple Pencil integration is allowing non-pencil input, drawing on the notepad or filling number boxes with handwriting even when I’m not using the pencil, just tapping the screen with my finger! Also, the numbers no longer “go away” when they’re all placed. It used to be that when you had 9x 2s, the 2 would disappear as an option. Now it stays there, even though you can’t use it any more.

This was definitely the best sudoku app in the App Store, up until two days ago. Now.... eh. Needs some help!

Edit: updating to 5 stars based on developer response and quick resolution of reported issues! Mistakes happen but what matters is how you respond to them. And this team responded exactly as they should. Thanks, guys!

Developer Response ,

UPDATED: Thanks so much for the revised review. We really are working super hard to make sure that problems are taken care of immediately. We do have some friends and family and even users who beta test for us but don't always catch stuff, then there are device specific issues. We are grateful for your understanding, patience, sticking with us when we have issues and most importantly: giving us the opportunity to correct them. Thank you again!

Please update to the latest version that was just released today Dec 3. We hope that you find the new version to be a much better experience than 1 star. Please feel free to email us at if you have any issues or suggestions. Thank you for your support!


Version 3.0 introduced a new mode - Classic Mode, which is activated by default. Please go into your settings & switch back to Mistake Mode, where you can enable to have duplicates removed, turn Quick Mode back on, etc.

Hope this helps!

El Woodrow ,

Great game, but saved games disappear

Part of the reason I selected this over the dozens of other sudoku apps is that I was impressed with how responsive the developers are to these reviews. Full disclosure: I have not tried any other sudoku apps so my review is not intended to be a comparison to other apps.

The UI is thoughtfully laid out and the settings offer tons of options that allow you to customize the playing experience to your liking. The ads are not intrusive and don’t interfere with game play. I have really enjoyed this game. This app, plus a cup of coffee and a quiet spot, provides me some beautiful zen time.

The only frustration I’ve had is that multiple times my saved game has disappeared. Frequently I will work on a puzzle over the course of several days, however 4-5 times now that puzzle will randomly disappear. Just today I was working on a puzzle that I’ve been chipping away at over the past 2-3 days, I set my phone down for an hour or so and when I came back there was no option to resume play. It won’t prevent me from continuing to use this app but I would love to see this resolved in future updates. Thanks for reading!


Hoolatron Studios
141 MB

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


English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Thai, Traditional Chinese, Turkish, Vietnamese

Age Rating
Rated 4+
© 2017 Hoolatron Studios
In-App Purchases
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