Kakuro are addictive logic puzzles best described as number-crosswords. Using pure logic and simple add/subtract calculations, these fascinating puzzles offer endless fun and intellectual entertainment to puzzle fans of all skills and ages.

Each puzzle consists of a blank grid with sum-clues in various places. The object is to fill all empty squares using numbers 1 to 9 so the sum of each horizontal block equals the clue on its left, and the sum of each vertical block equals the clue on its top. In addition, no number may be used in the same block more than once.

The game includes zoom for easier solving of large puzzles, as well as helpful features such as showing possible sum combinations in a block, showing the sum remainder of a block, and using pencilmarks to make temporary placement of numbers in the grid.

For more fun, Conceptis Kakuro includes a Weekly Bonus section providing an extra free puzzle each week.


• 100 free Kakuro puzzle samples
• 20 extra-large puzzles bonus for iPad only
• Extra bonus puzzle published free each week
• Multiple difficulty levels from very easy to extremely hard
• Puzzle library continuously updates with new content
• Manually selected, top quality puzzles
• Unique solution for each puzzle
• Hours of intellectual challenge and fun
• Sharpens logic and improves cognitive skills


• Concurrently playing and saving multiple puzzles
• Puzzle library sorting and hiding options
• Unlimited Undo and Redo
• Enlarge, reduce, move puzzle for easy viewing
• Pencilmarks for solving hard puzzles
• Show Sum Combinations feature
• Show Sum Remainder feature
• Check puzzle
• Track puzzle solving times


Kakuro have also become popular under other names such as Kakkuro, Cross Sums and Tashizan Cross. Similar to Sudoku, Hashi and Slitherlink, the puzzles are solved using logic alone. All puzzles in this app are produced by Conceptis Ltd. - the leading supplier of logic puzzles to printed and electronic gaming media all over the world. On average, more than 20 million Conceptis puzzles are solved each day in newspapers, magazines, books and online as well as on smartphones and tablets across the world.

What's New

Version 1.3

This version improves performance and stability.

Ratings and Reviews

4.7 out of 5

106 Ratings

106 Ratings

Next best app to Primo Kakuro


Let me preface this review by saying that Primo Kakuro was hands-down the best Kakuro app out there. Unfortunately, the developers have chosen not to upgrade their app to work with the new iPhone iOS. Perhaps they’ve decided to concentrate on their knitting apps (???!!!). They hadn’t added any more puzzle packs in a long time anyway, and I’ve been through them all. So I was forced to find a new app. After trying pretty much all of them I’ve settled on the Conceptis version as the best. After getting used to the interface, it works almost as well as Primo Kakuro. My only complaint is that it doesn’t allow you to use different colors for the pencilled-in numbers. Without this feature, the “Very Hard” puzzles are nearly impossible to complete without guessing, which kind of defeats the object of the game. Other than that, it’s an excellent substitute. And they seem to be adding more puzzle packs constantly, so hopefully we can enjoy it for a long time to come.

Love these puzzles, like the interface a lot too

Boggle Queen

I am a fan of conceptis’ puzzle books and am delighted to find this app. Puzzles are addictive and the levels appropriately match the difficulty of each puzzle. I wish there were a way to choose the difficulty level of the weekly bonus rather than having it cycle through different levels. I love how the pencil marks of linearly adjacent cells are updated when you confirm a number. Thanks for a fun and enjoyable app!



I like that this one a lot. It's my second Kakuro app. The other one got too repetitive and had many errors. This one is clean so far tho I've only done about 10 puzzles. Easy on the eyes, too. You can zoom into the larger puzzles to work on one area without burning out your eyeballs.
Update: I've done many more puzzles and they are all solvable. I wont go back to the old app. This one is the best.


Conceptis Ltd.
16.5 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Japanese, Simplified Chinese
Age Rating
Rated 4+
© Conceptis Ltd.
In-App Purchases
  1. Medium Variety 1 $1.99
  2. Hard Variety 1 $1.99
  3. Hard Snacks 1 $0.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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