Comparison

Sudoku ∙ vs 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 in a classic logic puzzle with multiple difficulty levels, from beginner to expert. Features include automatic saving, customizable options, and a beginner tutorial. Enjoy a well-crafted gameplay experience designed for maximum enjoyment on your mobile device.

Highlights
  • Multiple difficulty levels
  • Beginner tutorial
  • Automatic game saving
  • Customizable in-game options
  • Left or right-handed play
Features
Read full description

Sudoku is now available for iPhone, iPod Touch and iPad - with a level of gameplay never seen before in the AppStore! Discover this great version of Sudoku and join thousands of other addicted players - "This version is really well made - clean and easy to play. My favourite." - "Great game! I'll definitely recommend it to my friends." DIFFERENT GAME MODES - Four levels of difficulty - you can enjoy the game whether you're a beginner or an expert! - Novice player? Try our beginners' sudoku, with an interactive tutorial. - Or are you a Sudoku expert? Try the 'Impossible' level! - Left or Right-handed A FULL, FUN VERSION OF SUDOKU - Each turn is automatically saved - Prevent screen time-out during game time - The graphics have been designed to maximise your enjoyment Customise your game with many different in-game options, which you can turn on or off: - Show same-value numbers entered - Prevent same numbers from being entered - Activate or deactivate the timer

About

Sudoku #

This classic Sudoku game offers a unique and fun experience with levels designed by AI and machine learning. It helps exercise your brain, memory, and logic skills with five difficulty options and numerous levels.

Highlights
  • AI-designed Sudoku levels
  • Brain, memory, and logic training
  • 5 difficulty options
  • Thousands of levels
  • Human-solvable board filtering
Read full description

Classic Sudoku game, redefined by A.I. Our Sudoku is one of its own kind in the market. We use AI and Machine Learning to design the levels that bring a unique and fun experience to everyone. - Exercise your brain, memory and logic reasoning skills - 5 difficulty options, tons of levels, tons of fun - Levels designed by AI and Machine Learning *How to play* Fill the 9x9 board so that each row, column and 3x3 box contains all digits from 1 to 9. *Designed by AI* 1. Randomly generate 35,000+ valid board configurations for each difficulty levels 2. Classify “human solvable” boards using non-brute-force algorithms implemented using TensorFlow 3. These algorithms uses the same techniques as human solvers do, to filter out boards almost unsolvable by human 4. Less than 4% of these initial boards passed our AI test 5. Finally we validate the filtered sample with human testing to ensure board quality

Screenshots

Sudoku ∙4 screens
Sudoku #4 screens

Verdict

The call

The clearest difference is in-app purchases: Sudoku # at none against Sudoku ∙'s 1. Sudoku # also leads on update cadence (every 3 weeks vs every 2 months). Sudoku ∙'s advantage is ratings volume (1.4K vs 324) and device support (4 vs 2). On price, rating, review sentiment 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. Sudoku # asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Sudoku ∙ against 4.7 for Sudoku #. Both are backed by a comparable volume of ratings — 1.4K and 324 respectively. Written reviews split almost evenly too, at 79% and 79% positive.

UpkeepUpdate frequency

Sudoku ∙ ships an update every 2 months, Sudoku # every 3 weeks. The most recent releases landed on September 25, 2026 and September 19, 2026 respectively.

Scorecard6 real differences · 4 level
Sudoku ∙ versus Sudoku #: the parameters behind the verdict, then further details
ParameterSudoku ∙Sudoku #
PriceFreeFree
Rating4.7 (1.4K ratings) — better4.7 (324 ratings)
Positive reviews79.0% of reviews79.3% of reviews — better
Number of ratings1.4K — better324
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPod, Apple TV — betteriPhone, iPad
Requires iOS13.0 — better16.0
Further details — not scored
Size113 MB142 MB
Age rating4+4+
DeveloperSolitaire Games StudioJinyang Tang

Customer experience

Sudoku ∙

All ratings1,434 ratings
Positive95.1%
Neutral2.8%
Negative2.1%
Written reviews1,236 reviews
Positive79.0%
Neutral7.4%
Negative13.6%

Sudoku #

All ratings324 ratings
Positive92.9%
Neutral5.2%
Negative1.9%
Written reviews174 reviews
Positive79.3%
Neutral5.2%
Negative15.5%

Bugs and requests

Sudoku ∙

Reported bugs

3 issues
  • Incorrect puzzle solutions
  • Inconsistent scoring and progress tracking
  • Ads that disrupt gameplay

Requested features

4 requests
  • Option to disable ads
  • Larger grid size
  • Ability to review completed puzzles
  • Customizable themes and appearances

Sudoku #

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Sudoku ∙

One-time1
  • Remove advertising$2.99
None

Sudoku #

No in-app purchases

Questions

Is Sudoku ∙ free?
Sudoku ∙ is free to download, with in-app purchases available.
Is Sudoku # free?
Sudoku # is free to download, with no in-app purchases.
Which has better reviews, Sudoku ∙ or Sudoku #?
Sudoku ∙ is rated higher. Sudoku ∙ averages 4.7 out of 5 from 1.4K ratings, while Sudoku # averages 4.7 from 324 ratings.
Do Sudoku ∙ or Sudoku # have ads?
Both Sudoku ∙ and Sudoku # show ads.
Which is updated more often, Sudoku ∙ or Sudoku #?
Sudoku ∙ ships an update every 2 months, and Sudoku # every 3 weeks. Most recently, Sudoku ∙ was updated on September 25, 2026 and Sudoku # on September 19, 2026.

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