Sudoku ∙ vs Sudoku #
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
- Multiple difficulty levels
- Beginner tutorial
- Automatic game saving
- Customizable in-game options
- Left or right-handed play
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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
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.
- AI-designed Sudoku levels
- Brain, memory, and logic training
- 5 difficulty options
- Thousands of levels
- Human-solvable board filtering
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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
Verdict
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
Both are free to download. Sudoku ∙ sells 1 one-off in-app purchase. Sudoku # asks for nothing beyond the download.
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.
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.
| Parameter | Sudoku ∙ | Sudoku # |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (1.4K ratings) — better | 4.7 (324 ratings) |
| Positive reviews | 79.0% of reviews | 79.3% of reviews — better |
| Number of ratings | 1.4K — better | 324 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod, Apple TV — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 113 MB | 142 MB |
| Age rating | 4+ | 4+ |
| Developer | Solitaire Games Studio | Jinyang Tang |
Customer experience
Sudoku ∙
Sudoku #
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
Sudoku ∙
- Remove advertising$2.99
Sudoku #
No in-app purchases







