Killer Sudoku

Killer Sudoku

Clean, simple, uncluttered

68 ratings
30 reviews

Archived App (Last seen on 19 Sep 2025)

This is an archived listing of the app previously available on the App Store.

Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.

Details

  • Released
  • Updated
  • May 22, 2020
  • September 4, 2023

Features

Killer Sudoku screenshot #1 for iPhone
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Killer Sudoku screenshot #8 for iPhone
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About

This app offers a challenging variant of Sudoku where numbers in caged groups must add up to a given sum. It features puzzles of various sizes and difficulty levels, from beginner-friendly 4x4 grids to advanced 9x9 challenges, with interactive hints and tools to aid gameplay.

Killer Sudoku variant
Puzzles of various sizes (4x4, 6x6, 8x8, 9x9)
Multiple difficulty levels
Contextual hints for learning techniques
Automatic notes
Drag copy and repeat entries
Sum calculator
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What's New in Killer Sudoku

3.1.1

September 4, 2023

Minor updates

29

In-App Purchases

$1.99

Expert Pack

27 premium 9x9 puzzles (levels 10-12)

User reviews

Excellent, love it.

This app works so well, really well thought out and no ads…well not yet anyway but i’m sure they will come. Most of these games have so many ads that it becomes impossible to play anymore. Personally i’d rather just pay a one off fee to keep it ad free, I understand it’s not a public service but I will certainly never pay monthly. Anyway congratulations to whoever designed this, it’s perfect.
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Great app - but

Easy to use and great app, but some puzzles have more than one solution and some require guessing rather than deduction. Biggest problem is you soon run out of puzzles, even if you buy more, after two extra buys, no more are available, shame, have to know use alternative app.

Later addition: he did make more available to purchase but these soon ran out, then found when trying to buy more that he was just reselling the same ones and charging for them, they wouldn’t even work because the app recognised you had already solved them! Had to get Apple to refund, shame really was a great app.
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Good!

Fun game and love killer sudokus!

Love it

Like how it progresses from easy to difficult

Amazing app

You have everything you need and nothing you don’t. Really great to get off the social media for a while and zone out on a puzzle. Thanks for the awesome app :D

Response from developer

Lovely words jazzmartiiin. Happy solving!

Developer apps

FAQ

What is Killer Sudoku?

Killer Sudoku, also known as Sumdoku or Mathdoku, is a variant of Sudoku. In this game, cells are grouped into cages, and the sum of the numbers within each cage is provided. Players must deduce the numbers for each cell based on these sums and standard Sudoku rules.

What are the key features of this app?

The app offers a wide variety of Killer Sudoku puzzles in different sizes (4x4, 6x6, 8x8, 9x9) and difficulty levels. It includes interactive hints to help learn techniques, automatic notes, drag copy and repeat entries, a sum calculator, and a progress validator.

Is this app free to play?

The app is free to download and play, but it does offer in-app purchases and contains advertisements. These may enhance the user experience or provide additional content.

What devices is this app compatible with?

While specific operating system versions are not detailed, the app is designed for mobile devices. It is generally compatible with most modern smartphones and tablets running iOS or Android.

Who would enjoy playing this app?

This app is ideal for puzzle enthusiasts, particularly those who enjoy Sudoku and are seeking a more complex and mentally stimulating challenge. It's suitable for beginners learning Killer Sudoku techniques and experienced players looking to test their skills on difficult puzzles.