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KenKen Classic

By KenKen Puzzle

This app is only available on the App Store for iOS devices.


KenKen® - Brain Training Puzzle

Train your brain with KenKen®, the unbelievably fun, exciting and addictive logic and math puzzle! KenKen is an amazing puzzle that is frequently described as “sudoku on steroids.” If you like other brain games such as sudoku, 2048, Threes, Kakuro, Unblock Me, Tricky Test, Tetris, Flow, jigsaw puzzles, word search puzzles, or crossword puzzles, then you will LOVE KenKen!

This is the ONE-AND-ONLY Original KenKen app, created by acclaimed Japanese mathematics educator Tetsuya Miyamoto. Don’t be fooled by unauthorized versions such as mathdoku and calcudoku, and don't get stuck in a sudoku rut. Play KenKen math puzzles today!

KenKen appears daily in the New York Times and hundreds of other publications around the globe. NY Times puzzle editor, Will Shortz, calls KenKen "the most addictive puzzle since sudoku."

There are virtually unlimited KenKen puzzles available to you on this app. The first 50 are included FREE with the download. If you need problem! Just order them and they'll appear immediately. YOU select the size, difficulty level, and operations.

KenKen Classic includes:
- 50 FREE fun math puzzles of every size and difficulty level
- Unlimited FREE 3x3 size puzzles to learn from and enjoy
- Virtually unlimited puzzles, ranging from 3x3 to 9x9 grids, from Easy to Expert
- A variety of color schemes and music (you can even set your own music to play in the background)
- 3 input modes for digits and notes
- Great extra features such as Hints, Check, Undo, Redo, Reset, Pause, and Timer
- Online leaderboards
- Ability to post results directly to Twitter
- Ability to email results and invite friends

What's New in Version 2.2

Just making things better.


iPhone Screenshot 1
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iPad Screenshot 1
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Customer Reviews

Many games can't be solved without guessing.

The games are machine generated, and many (at the expert level, at least) require guessing to solve. Kenken is a LOGIC game, not a guessing game. The UI is also frustratingly bad, requiring multiple taps to do simple things like change note color, and it's easy to change notes inadvertantly.

The developer's response is simply not true. I've played several games, for example, where the last 10 moves or so could be played out two ways, both of which yielded a correct result, but only one of which was deemed as a win. Several games were simply not solvable without playing out a guess until it failed, then backing out to the decision and choosing the other alternative. That's not "considering," it's guessing. No machine-generated game should be posted if it hasn't been solved by a human player who can't project 20 moves out. Also, the UI becomes more and more frustrating over time.

At present, this is the only alternative on the app store, given that the older (and excellent) "Will Short" app doesn't run under the most recent iOS version, but it's not a great alternative. I'll move to a competitor in a heartbeat if an alternative appears in the store.

I give up

I enjoy playing KenKen and have for several years. The puzzles in this app are great and the playing functions of the game are great. 5 stars on that.
But the overhead of the app is horrendous. I have had to reload the game a dozen times in the past six months. Sometimes the settings will work and sometimes they won't. I pay for the unlimited games but wish they would let me reset or something. Currently, e settings will not allow me to "Hide played games". So it loads all of the games I have played in the past. Too much overhead! Support has been a joke. They just respond with "reload game".
It's too bad. The game itself is fine.

Frustrating interface

I am a long term sudoku player, and I thought I would expand to KENKEN with this app. The game (to fill all the spots of a matrix that satisfy certain rules with one and only one use of the digits in each row). KENKEN is challenging, however the human interface is frustrating. If you are not VERY purposeful about touching a location, it may or may not register the touch. This makes the game frustrating. I am a high speed sudoku player, so I know it is not my iPad.

KenKen Classic
View in iTunes
This app is designed for both iPhone and iPad
  • Free
  • Category: Games
  • Updated:
  • Version: 2.2
  • Size: 38.8 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

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Top In-App Purchases

  1. 250 Puzzles PLUS removal of all ads!$7.99
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  4. Annual Unlimited Subscription - Ad Free$19.99
  5. 500 KenKen toKENs$0.99