Comparison

KenKen Classic vs JT's Mathmory

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

JT's Mathmory

This game challenges your memory and math skills by presenting equations. You need to recall if the solution or the exact equation has appeared previously. It's a unique blend of arithmetic and recall.

Highlights
  • Equation presentation
  • Solution recall
  • Exact equation memory
  • Arithmetic challenges
  • Progressive difficulty
Features
Read full description

A simple, unattractive app combining the "fun" of math and memory. Presented with some form an equation (whether it be a combination of arithmetic operators or just a single number), you must determine whether the solution has been seen before. If so, you must remember even further and determine if the exact equation has been shown! Good luck.

Screenshots

KenKen Classic2 screens
JT's Mathmory4 screens

Verdict

The call

The clearest difference is in-app purchases: JT's Mathmory at none against KenKen Classic's 6. JT's Mathmory also leads on update cadence (every 9 days vs every 4 months) and rating (5.0 vs 4.6). KenKen Classic's advantage is ratings volume (3.2K vs 3) and iOS requirement (12.1 vs 15.1). On price, ads and device support 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. JT's Mathmory asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

JT's Mathmory holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: KenKen Classic has 3.2K ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

KenKen Classic ships an update every 4 months, JT's Mathmory every 9 days. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 4 level
KenKen Classic versus JT's Mathmory: the parameters behind the verdict, then further details
ParameterKenKen ClassicJT's Mathmory
PriceFreeFree
Rating4.6 (3.2K ratings)5.0 (3 ratings) — better
Positive reviews72.7% of reviews—
Number of ratings3.2K — better3
Update frequencyEvery 4 monthsEvery 9 days — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.1 — better15.1
Further details — not scored
Size40 MB33 MB
Age rating4+4+
DeveloperKenKen PuzzleJohnie Rodgers

Customer experience

KenKen Classic

All ratings3,172 ratings
Positive92.7%
Neutral2.6%
Negative4.6%
Written reviews315 reviews
Positive72.7%
Neutral9.5%
Negative17.8%

JT's Mathmory

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

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

JT's Mathmory

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
None

JT's Mathmory

No in-app purchases

Questions

Is KenKen Classic free?
KenKen Classic is free to download, with in-app purchases available.
Is JT's Mathmory free?
JT's Mathmory is free to download, with no in-app purchases.
Which has better reviews, KenKen Classic or JT's Mathmory?
JT's Mathmory is rated higher. KenKen Classic averages 4.6 out of 5 from 3.2K ratings, while JT's Mathmory averages 5.0 from 3 ratings.
Do KenKen Classic or JT's Mathmory have ads?
Both KenKen Classic and JT's Mathmory show ads.
Which is updated more often, KenKen Classic or JT's Mathmory?
KenKen Classic ships an update every 4 months, and JT's Mathmory every 9 days. Most recently, KenKen Classic was updated on October 29, 2026 and JT's Mathmory on October 24, 2026.

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