Comparison

Sudoku ++ vs Challenge! Sudoku

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

Head to head
About

Sudoku ++

Engage your logic with a classic 9x9 puzzle experience. This app offers multiple difficulty levels, fast note-taking, and helpful hints. Track your progress with detailed statistics and customize your play with various themes. Enjoy a calm and satisfying number puzzle every time.

Highlights
  • Classic 9x9 Sudoku puzzles
  • Multiple difficulty levels
  • Fast note-taking and pencil marks
  • Highlighting for rows, columns, and numbers
  • Undo, redo, and erase functions
  • Hint system and mistake checking
  • Progress tracking statistics
  • Customizable themes
Features
Read full description

Train your logic with a polished classic Sudoku app built for comfortable mobile play. Sudoku++ gives you a clean 9x9 puzzle board, fast pencil marks, clear highlighting, useful hints, lessons, and stats in one focused number puzzle experience. Start an easy puzzle for a quick break or step up to harder challenges when you want deeper logic. Why players like it: • Classic 9x9 Sudoku with multiple difficulty levels • Fast notes and pencil marks for serious solving • Highlighting for rows, columns, boxes, and matching numbers • Undo, redo, erase, pause, timer, and resume • Helpful hint system and mistake checking options • Learn tab with short lessons for rules and solving patterns • Statistics to track progress and best times • Light, dark, system, and extra board themes • Save unfinished games automatically Free play includes classic puzzles, notes, undo, timer, basic stats, and limited hints. Pro is a one-time upgrade for unlimited puzzles, advanced difficulty, deeper assistance, auto notes, full statistics, and extra customization. Whether you call it Sudoku, number place, or a daily brain puzzle, Sudoku++ is designed to feel calm, readable, and satisfying every time you open the board.

About

Challenge! Sudoku

Engage in classic Sudoku puzzles with a competitive edge. Challenge players globally and locally to achieve top rankings on leaderboards. Customize difficulty levels to suit your skill, from beginner to expert.

Highlights
  • Global ranking system
  • Compete with friends
  • Multiple difficulty levels
  • User-friendly interface
  • Record sharing
Features
Read full description

* Introduction Our Sudoku app offers a simple yet addictive classic puzzle. Compete with other users and aim for the top position on the Sudoku rankings. * Key Features Ranking System: Share Sudoku records with players worldwide and compete on the rankings. Various Difficulty Levels: Suitable for beginners to experts, with customizable difficulty settings. Compete with Friends: Share Sudoku records with friends and compete together. User-Friendly Interface: Enjoy playing Sudoku with an intuitive and easy-to-use interface. * How to Get Started Choose your preferred Sudoku difficulty. Solve Sudoku puzzles and achieve records. Compete with others to rank higher on the leaderboard! Use our Sudoku app to improve your skills and aspire to become the Sudoku champion of the world!

Screenshots

Sudoku ++4 screens
Challenge! Sudoku4 screens

Verdict

The call

Sudoku ++ and Challenge! Sudoku both sit at 5.0 stars, but that hides the real split: 100% of Challenge! Sudoku's written reviews are positive against 12% of Sudoku ++'s. Challenge! Sudoku also leads on in-app purchases (none vs 1) and update cadence (every 2 days vs weekly). Sudoku ++'s advantage is device support (4 vs 2). On price, rating, ratings volume and ads 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. Sudoku ++ sells 1 one-off in-app purchase. Challenge! Sudoku asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Sudoku ++ against 5.0 for Challenge! Sudoku. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews are what separate them: 12% of Sudoku ++'s written reviews are positive against 100% of Challenge! Sudoku's.

UpkeepUpdate frequency

Sudoku ++ ships an update weekly, Challenge! Sudoku every 2 days. The most recent releases landed on October 23, 2026 and October 17, 2026 respectively.

Scorecard5 real differences · 5 level
Sudoku ++ versus Challenge! Sudoku: the parameters behind the verdict, then further details
ParameterSudoku ++Challenge! Sudoku
PriceFreeFree
Rating5.0 (4 ratings)5.0 (2 ratings)
Positive reviews11.9% of reviews100.0% of reviews — better
Number of ratings4 — better2
Update frequencyWeeklyEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size35 MB58 MB
Age rating4+4+
DeveloperVM Mobile Teamkyulabs

Customer experience

Sudoku ++

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews59 reviews
Positive11.9%
Neutral6.8%
Negative81.4%

Challenge! Sudoku

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Sudoku ++

One-time1
  • Premium$4.99
None

Challenge! Sudoku

No in-app purchases

Questions

Is Sudoku ++ free?
Sudoku ++ is free to download, with in-app purchases available.
Is Challenge! Sudoku free?
Challenge! Sudoku is free to download, with no in-app purchases.
Which has better reviews, Sudoku ++ or Challenge! Sudoku?
Sudoku ++ and Challenge! Sudoku are both rated 5.0 out of 5 on the App Store, from 4 and 2 ratings respectively.
Do Sudoku ++ or Challenge! Sudoku have ads?
Neither Sudoku ++ nor Challenge! Sudoku shows ads.
Which is updated more often, Sudoku ++ or Challenge! Sudoku?
Sudoku ++ ships an update weekly, and Challenge! Sudoku every 2 days. Most recently, Sudoku ++ was updated on October 23, 2026 and Challenge! Sudoku on October 17, 2026.

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