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Sudoku & Killer: SudoKoi

Sudoku & Killer: SudoKoi

No Ads. Logic Puzzles. Minimal

64 ratings
20 reviews
🎮 Games
🎲 Board
🧩 Puzzle
Free
In-App Purchases

Details

Released
October 21, 2020
Updated
March 7, 2026

Features

Developer

Fabian Zwick
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Sudoku & Killer: SudoKoi video #1 for iPhone
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iphone
ipad
🧾$24.99
In-App Purchase↘︎
⭐20
Reviews↘︎
🔄6+ apps
Alternatives↘︎
❓8 answered
FAQ↘︎
📦w/o updates
Updates frequency↘︎
🖼️Get Icon
Icons↘︎

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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3

Subscriptions & In-App Purchases

SudoKoi+

Unlock access to thousands of Sudokus.

$0.991 Month
How to cancel Sudoku & Killer subscription ⁉️

User reviews

Most RecentHighest RatedLowest Rated

Marked as free, actually blackmail.

But not. Only get a few goes then it starts charging.
NNick23109

Sudoko

Es fehlen Vorschläge und Löschen alles nach dem ersten Fehler!
CChMJ

Fantastic

I have been using this app for quite a while now. It’s never caused me a problem, It works and does what it should. I even add newspaper SudoKoi to the app, works every time. If you love doing SudoKoi puzzles you’ll love this app.
DDogwizard

My favorite sudoku app

Clean, good extreme puzzles, and killer mode. The automated deletion of notes is too helpful in normal sudoku, but I like it for killer sudoku. Snyder notations are a nice touch.
AAllezàl'Auditorium

Response from developer

Thanks for the kind words. The automated deletion of notes can be turned off in the settings. On the main menu tap on the info button in the lower left corner. Kind regards

Für Sudoku Liebhaber

Das ist wirklich dir beste App für Sudoku-Liebhaber.

Simpel aufgebaut und per Stifteingabe spielbar. Absolut das was ich gesucht habe. Man kann auch Fotos von einem Rätsel machen und es dann in der App lösen.

Dafür habe ich mir auch sofort die Plus Variante gekauft. Hatte zwar ein Problem, aber der Support hat direkt weitergeholfen.

Perfekt!! ❤️🤩
Show more
KK_TTY
See 15 more reviews

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.