Sudoku

Contains ads
4.5
192K reviews
Content rating
Everyone
5M+
Downloads
Content rating
Everyone
Learn more
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About this game

★ Top Developer (awarded 2011, 2012, 2013 and 2015)★
Sharing the same top quality gameplay, graphics and interface as the rest of our app library, AI Factory's Sudoku is an essential download for any Sudoku or brain training fan! You never need a paper puzzle again!

- 2500 Sudoku puzzles over 5 difficulty levels, covering easy through to medium, hard, and extreme levels

- Various different modes for notes input to cater for all playing styles

-Pre-fill notes option

-Auto-clear notes option

- Optional hints, undo and board aids

- 4 fonts/sets of symbols & 3 boards

- Statistics tracking, including fastest times, average times and completion % for each level

- Super smooth interface and graphics

- Suitable for both Phones and Tablets

This free version is supported by 3rd party ads. Ads may use internet connectivity, and therefore subsequent data charges may apply.
Updated on
Dec 23, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location, App activity and 2 others
This app may collect these data types
Location, App activity and 2 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.6
176K reviews
Snorri Gudmundsson
August 19, 2022
Finishing a game starts an ad from its maker for some of its other games. The problem is (1) it is about 30-sec long and (2) no cancel button shows up and eventually forces you to the Play Store. This drives me nuts because I don't want other games (come on guys, take a hint). Yes, it is fair an ad of some sort shows up, but allow me to skip after 5-sec, for crying out loud. Game is good but not worth this. It is antithetical to AI altogether. I am deleting it and moving to other companies.
28 people found this review helpful
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AI Factory Limited
August 19, 2022
We're sorry for your ad experience. These are ads for games by other developers and ad networks control how and when they can be skipped. Popup ad is designed to be skippable after 5 seconds with fast forward or "x". If fast forward disappears, tap ad where it was. Please report any problem cases to support@aifactory.co.uk. Paid version has no ads.
A Google user
April 30, 2019
I had to have my phone hard rebooted so I lost all the apps. I couldn't remember the name of this one so I tried a few others before I bumped into this one. So very happy. I have played through level 1 twice and through level 2. i can't remember how many times i have gone through level 3. I don't care about the stats, just enjoy this version best.
9 people found this review helpful
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Teri Aslin
February 24, 2026
I've been playing this for years, really love the format, particularly being able to replay the same game to try to beat my own time. Unfortunately I'm not enjoying the latest version, the lines between each 9 number square are too faint. I would be over the moon if you fixed that.
4 people found this review helpful
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AI Factory Limited
February 25, 2026
Thank you for your thoughts. We've not made the grid lines fainter but will look into it during future development. In the meantime, there are other grids you could try out in Menu > Options (wrench icon)

What’s new

Minor updates