Comparison

KenKen Classic vs Number Join

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

KenKen Classic

Engage your mind with this addictive logic and math puzzle game. It offers a virtually unlimited supply of challenges with adjustable difficulty and grid sizes. Enjoy a fun way to train your brain with a trusted source of daily puzzles.

Highlights
  • Unlimited puzzles
  • Adjustable difficulty and grid size
  • Multiple input modes
  • Hints, Undo, Redo, Reset
  • Online leaderboards
  • Color schemes and music options
Features
Read full description

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 more...no 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

About

Number Join

A logic puzzle game where you fill in missing numbers sequentially. Solve puzzles by connecting numbers horizontally, vertically, or diagonally across various difficulty levels. Features include hints, auto-save, and time tracking.

Highlights
  • Fill missing numbers sequentially
  • Horizontal, vertical, and diagonal connections
  • 5 difficulty levels
  • Over 500 levels
  • Check function for wrong numbers
  • Auto-save unfinished levels
  • Record best completion times
Features
Read full description

This game is a logic puzzle with simple rules. Your aim is to fill in the missing numbers, in sequential order, going horizontally, vertically, or diagonally. **** Features **** # Content - 5 difficulty levels - more than 500 levels # Features - "Check" function can highlight wrong numbers - option to enable automatically highlight wrong numbers - Auto-save the process of unfinished levels - Record best completion time for each level # Challenge - Game Center Achievements - Try to complete as many levels as possible

Screenshots

KenKen Classic2 screens
Number Join4 screens

Verdict

The call

The clearest difference is rating: KenKen Classic at 4.6 against Number Join's 4.2. KenKen Classic also leads on ratings volume (3.2K vs 59). Number Join's advantage is review sentiment (89% vs 73%). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. KenKen Classic sells 6 in-app purchases, starting at $19.99 per year and Number Join sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

KenKen Classic holds the better App Store score, 4.6 against 4.2. That said, the two scores are not equally well evidenced: KenKen Classic has 3.2K ratings behind it against 59, so its average is the more settled of the two. Written reviews complicate that: 73% of KenKen Classic's written reviews are positive against 89% of Number Join's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

KenKen Classic ships an update every 4 months, Number Join every 5 months. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

Scorecard3 real differences · 7 level
KenKen Classic versus Number Join: the parameters behind the verdict, then further details
ParameterKenKen ClassicNumber Join
PriceFreeFree
Rating4.6 (3.2K ratings) — better4.2 (59 ratings)
Positive reviews72.6% of reviews88.9% of reviews — better
Number of ratings3.2K — better59
Update frequencyEvery 4 months — betterEvery 5 months
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.1 — better13.0
Further details — not scored
Size40 MB8 MB
Age rating4+4+
DeveloperKenKen PuzzleStanley Lam

Customer experience

KenKen Classic

All ratings3,172 ratings
Positive92.7%
Neutral2.6%
Negative4.6%
Written reviews314 reviews
Positive72.6%
Neutral9.6%
Negative17.8%

Number Join

All ratings57 ratings
Positive86.0%
Neutral5.3%
Negative8.8%
Written reviews27 reviews
Positive88.9%
Neutral0.0%
Negative11.1%

Bugs and requests

KenKen Classic

Reported bugs

3 issues
  • Puzzles disappearing after device reset or upgrade
  • Purchased puzzles not syncing across devices
  • App crashing or freezing

Requested features

4 requests
  • Dark mode option
  • Ability to save and revert puzzle progress
  • No-op puzzles for advanced players
  • Improved puzzle loading and syncing across devices

Number Join

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

KenKen Classic

Subscriptions1
  • Full Year Subscription NO ADS!$19.991 Year
One-time5
  • 500 KenKen toKENs$0.99
  • 31 Puzzles PLUS removal of all ads!$1.99
  • 250 Puzzles PLUS removal of all ads!$7.99
Show 2 more
  • 1000 Puzzles PLUS removal of all ads!$14.99
  • Annual Unlimited Subscription - Ad Free$19.99
1 purchases

Number Join

One-time1
  • Upgrade to Full Version$0.99

Questions

Is KenKen Classic free?
KenKen Classic is free to download, with in-app purchases available.
Is Number Join free?
Number Join is free to download, with in-app purchases available.
Which has better reviews, KenKen Classic or Number Join?
KenKen Classic is rated higher. KenKen Classic averages 4.6 out of 5 from 3.2K ratings, while Number Join averages 4.2 from 59 ratings.
Do KenKen Classic or Number Join have ads?
Both KenKen Classic and Number Join show ads.
Which is updated more often, KenKen Classic or Number Join?
KenKen Classic ships an update every 4 months, and Number Join every 5 months. Most recently, KenKen Classic was updated on October 24, 2026 and Number Join on October 23, 2026.

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