Sudoku & Killer: SudoKoi

Sudoku & Killer: SudoKoi

No Ads. Logic Puzzles. Minimal

54 ratings
9 reviews
Free
In-App Purchases

Details

  • Released
  • Updated

Features

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Sudoku & Killer: SudoKoi screenshot #10 for iPhone
iphone
ipad
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About

Enjoy classic and killer Sudoku puzzles without ads or interruptions. This app offers a clean interface with multiple difficulty levels, smart notes, and the ability to scan puzzles from paper. Play offline and track your progress, with an optional upgrade for thousands of additional puzzles.

Classic and Killer Sudoku
5 difficulty levels
Smart notes and candidate tracking
Scan printed puzzles
Offline play
Progress tracking
Play up to 9 games at once
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What's New in Sudoku & Killer

1.4.2

March 7, 2026

This update fixes an issue with the timer. If SudoKoi has become part of your daily routine, a quick review helps more players find us — and means a lot to a small indie team. Thank you.

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Subscription plans

SudoKoi+

Unlock access to thousands of Sudokus.

$0.991 Month
How to cancel Sudoku & Killer subscription ⁉️
3

In-App Purchases

$24.99

SudoKoi++

Unlock access to thousands of Sudokus.

User reviews

really good potential

this app is designed really well, just missing settings that other apps have, such as "disable highlighting rows/columns/boxes" or "show errors" which i prefer to play on. i'll probably stick with another app unless this one adds settings so you can pick your preferences

Response from developer

Hi, thanks for your kind feedback. The setting to disable highlighting is a good idea, I’ll consider it. For showing errors there is an option you can turn on. On the main screen you can tap on the info button in the lower left. There you can enable “Show all errors”. Kind regards Fabian

For every level

Takes a few games to adjust, with time you get used to the small screen and the prompts.

Best Sudoku app for iPad

This is by far the best app I’ve tried. It supports Split View which was how i originally found it. Not to mention there are no ads and it merges sudoku and killer sudoku into one app.

Response from developer

Thank you for your kind words. I’m glad you like the app. Have fun!

Would be five stars without other sudoku format

Title

Great Sudoku app

Not much else to be said, I use this on the Mac and it works great. Very responsive developer.

Response from developer

Thanks for the kind feedback! Keyboard shortcuts will be fixed in the next update coming shortly. And there will also be an option to show all mistakes immediately. Glad to hear you enjoy the app. Kind regards

FAQ

Does SudoKoi have ads?

No, SudoKoi is designed to be completely ad-free. The developers emphasize a puzzle-focused experience without interruptions, and the app has a 'hasAds' value of false.

What is the price of SudoKoi?

SudoKoi is free to download and play with a selection of puzzles. An optional subscription, SudoKoi+, is available for $0.99/month or $7.99/year, unlocking thousands of additional puzzles.

Can I play SudoKoi offline?

Yes, SudoKoi is fully offline. You do not need an internet connection to play any of the puzzles, making it convenient for on-the-go gaming.

What devices does SudoKoi support?

SudoKoi is optimized for Apple devices, including iPhone, iPad, and Mac. It also supports iPod.

How often is SudoKoi updated?

The app was last updated on March 7, 2026, indicating recent development. The latest version is 1.4.2.

What age rating does SudoKoi have?

SudoKoi has an age rating of 4+, making it suitable for a wide range of players.

What makes SudoKoi different from other Sudoku apps?

SudoKoi focuses on a minimalist, ad-free experience with no paywalls or dark patterns. It offers both Classic and Killer Sudoku, smart features, and the unique ability to scan printed puzzles.

What are the SudoKoi+ subscription options?

SudoKoi+ offers unlimited access to thousands of handcrafted puzzles. You can choose between monthly ($0.99/P1M), yearly ($7.99/P1Y), or a one-time lifetime purchase option.