Kakuro Challenge - Cross Sum

Kakuro Challenge - Cross Sum

Logic Puzzle

64 ratings
20 reviews
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • December 20, 2016
  • December 17, 2025

Features

Kakuro Challenge - Cross Sum screenshot #1 for iPhone
Kakuro Challenge - Cross Sum screenshot #2 for iPhone
Kakuro Challenge - Cross Sum screenshot #3 for iPhone
Kakuro Challenge - Cross Sum screenshot #4 for iPhone
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About

Engage your mind with a classic number logic puzzle. Solve crosswords with numbers where each sum must match the clue, and numbers can only be used once. Explore a new variant with dots indicating adjacent number differences.

Standard Kakuro puzzles
Dot Kakuro variant
5 difficulty levels
3 Dot Kakuro sizes
Cheat sheet
Pencil mode
Hint feature
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What's New in Kakuro Challenge

1.0.18

December 17, 2025

- Bug fixes and performance improvements

7

In-App Purchases

$0.99

Kakuro Beginner Pack

Contains 25 Beginner levels and 25 Easy levels of Kakuro puzzles

User reviews

Great game poor layout

I love this game. Used to play it years ago on paper and delighted to have found it again as an app. I tried several Kakuro apps and this is by far the best for playing, and ads are not too intrusive.
The only thing that lets it down is the layout. I’m playing on a phone so making best use of screen space is important. The puzzle is at the top, plenty of space. Then there is a lot of blue background space, with the number pad plus other controls squeezed into the bottom fifth along with a fairly large Menu key. So the numbers are quite small and fat fingers have difficulty. It would be very much better if the number pad took the full width further up the screen, giving the other controls more space too.
I’m keeping going because otherwise it’s great, but I hope you can do something about this. Thanks.
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初級は面白い

面白くて、病みつきになりそう!

Great but not enough puzzles

This was my favorite Nakuru game but it has a limited number of puzzles. After you solve all the free and the paid puzzles your only option it to do the previously solved puzzles over again. They haven’t added any new puzzles.

Good game

Great brain game. My only complaint is that the keyboard is not easy to use, needs a fair bit of pressure, so makes it slow.

Numbers not working

Great game, but the numbers mainly 123 do not work most of the time.

Developer apps

FAQ

What is Kakuro Challenge?

Kakuro Challenge is a mobile application that offers classic Kakuro logic grid puzzles. These puzzles are similar to crosswords but use numbers, where each row or column must add up to a specific clue number, and each digit can only be used once within that sum.

What are the key features of Kakuro Challenge?

The app includes standard Kakuro puzzles with five difficulty levels and a new Dot Kakuro variant with three sizes. It also provides helpful features like a cheat sheet, pencil mode, a hint system, autosave for unfinished puzzles, and records for best completion times.

How is Kakuro Challenge monetized?

The application is free to download and play, but it does include advertisements and offers in-app purchases. These purchases may allow for an ad-free experience or provide access to additional content or features.

What is Dot Kakuro?

Dot Kakuro is a unique variant of the Kakuro puzzle. In this version, a dot between two neighboring cells signifies that the numbers in those cells differ by exactly 1. If there is no dot, the difference between the numbers is greater than 1.

Can I solve Kakuro puzzles using only logic?

Yes, the description states that every Kakuro puzzle has a single, unique solution that can be reached through logical deduction alone. The app provides tools like a cheat sheet and hints to assist players in their logical process.