Kakuro: Number Crossword

Kakuro: Number Crossword

Cross sum challenges

1.7K ratings
229 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • May 25, 2017
  • July 6, 2026

Features

Kakuro: Number Crossword video #1 for iPhone
Kakuro: Number Crossword screenshot #2 for iPhone
Kakuro: Number Crossword screenshot #3 for iPhone
Kakuro: Number Crossword screenshot #4 for iPhone
Kakuro: Number Crossword screenshot #5 for iPhone
Kakuro: Number Crossword screenshot #6 for iPhone
Kakuro: Number Crossword screenshot #7 for iPhone
Kakuro: Number Crossword screenshot #8 for iPhone
Kakuro: Number Crossword screenshot #9 for iPhone
Kakuro: Number Crossword screenshot #10 for iPhone
Kakuro: Number Crossword screenshot #11 for iPhone
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About

Fill empty squares with numbers 1-9 so that each block sums to the clue on its left or top. No number can be repeated within a block. This logic puzzle offers endless fun and sharpens cognitive skills.

Fill empty squares to match sum clues
No number repetition within blocks
200 free puzzles and weekly bonus
Multiple difficulty levels
Zoom and pencilmark features
Graphic puzzle progress previews
Dark Mode support
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What users say

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What's New in Kakuro

3.6

July 6, 2026

This version improves performance and stability.

13

In-App Purchases

$1.99

Easy Variety 1

50 Kakuro puzzles

User reviews

Eliminate “brute force” hint games

I very much enjoy the “very hard” Kakuro puzzles. Learn a lot about the logical ways to remove candidates. However, I am greatly disappointed when I get a “brute force” ( = guess ) hint with 20 squares yet to go. Either a guess is truly required or the logical hint is too difficult to explain in the app. Either way, I really don’t care to pay for these games that end like this. The claim is that properly structured games should not require guessing. Is there a way to save the game state so one can return to the point of the first brute force guess….after wandering in the forest of guesses?
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Brain Gain

Keeps me working that brain and thinking.

Fun and challenging

The games are a great way to stimulate your mind. If you enjoy a challenge, this a great game for you!

Good fun!

App keeps the game interesting, challenging, and there’s some nice helping tools.

Does not save anymore

Since the last upgrade, the app no longer saves my weekly puzzle in progress. This is the same on all Conceptis apps.
These are my favorite puzzle apps, but I can no longer play the more challenging ones due to having to start over every time I open it.

Developer apps

User experience

🐞

Reported Bugs

2 issues

Some puzzles claim incorrect solutions are correct

Bug

Weekly bonus puzzles not refreshing properly on iOS 17

Bug

Requested Features

3 requests

Ability to highlight and add pencil marks to multiple cells in one operation

Feature

Help feature to learn advanced solving techniques

Feature

Option to auto-fill pencil marks after using hints without overwriting existing marks

Feature

FAQ

What is Kakuro: Number Crossword?

Kakuro: Number Crossword is a logic puzzle game where you fill empty squares in a grid. The goal is to make each horizontal block of numbers sum to the clue on its left and each vertical block sum to the clue on its top. Numbers 1 through 9 are used, and no number can be repeated within the same block.

What are the key features of this Kakuro app?

The app offers 200 free puzzles, a weekly bonus puzzle, and multiple difficulty levels. It includes helpful features like zoom, pencilmarks for temporary number placement, and the ability to show possible sum combinations or sum remainders. It also supports Dark Mode and provides graphic previews of puzzle progress.

Is this app free to play?

The app is free to download and play, offering 200 free Kakuro puzzle samples and an extra free puzzle each week. It also includes in-app purchases, suggesting that additional puzzle packs or features might be available for purchase.

What devices is Kakuro: Number Crossword compatible with?

The app is designed for mobile devices. While not explicitly stated for all platforms, it mentions portrait and landscape screen support for iPad, indicating compatibility with iOS devices. It is also likely available on Android devices given the nature of such puzzle apps.

How does this app help improve logic skills?

By requiring players to use pure logic and simple arithmetic to deduce the correct numbers for each square, the game actively sharpens logic and improves cognitive skills. The process of solving unique puzzles with no repeated numbers within blocks encourages strategic thinking and problem-solving.