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 with an unlimited supply of Sudoku puzzles, playable online or offline. This app offers six difficulty levels, daily challenges, and a clean, user-friendly interface designed for both novice and expert players. Enjoy a distraction-free experience with customizable settings and essential tools like undo/redo and note-taking.

Highlights
  • Unlimited Sudoku grids
  • Offline play
  • 6 difficulty levels
  • Daily challenges
  • Undo/Redo functionality
  • Automatic and manual notes
  • Conflict and error highlighting
Features
Read full description

Sudoku for beginners and advanced players alike, with unlimited grids on or offline, 6 difficulty levels ranging from "easy" to "diabolical," daily challenges, and a beautiful ergonomic design. Sudoku with no distractions: - Fast: no lengthy intros or slow animations. - Small: doesn't eat up a lot of storage on your device. - Friendly: big buttons avoid fat-fingering. - Non-intrusive: plays your music and nothing else. Sudoku with all the nuts and bolts: - Undo / Redo. - 10 concurrent grids. - Automatic and manual notes. - Conflict and error highlighting. - Customizable input and display settings. Sudoku on all your devices: - Universal: iPad, iPhone, and iPod touch. - Retina: native resolution on all screens. For feature requests and feedback, please email us at help@mindthefrog.com. Enjoy, The friendly team at mindthefrog :)

About

Sudoku ▦

Enjoy the classic paper-and-pencil puzzle game on your phone with a clean, elegant design. Challenge your mind with multiple difficulty levels and helpful tools to aid your solving experience.

Highlights
  • Thousands of free puzzles
  • Classic Sudoku design
  • Pencil mode for notes
  • Highlight duplicates
  • Optional mistake limit
  • Four difficulty levels
  • Customizable appearance
Features
Read full description

Sudoku ▦ is one of the best loved and most popular puzzle games in the world. Now you can play the classic paper and pencil puzzle game right on your phone! With our simple and elegant design, Tripledot’s Sudoku▦ for mobile is the best way to play this timeless classic. Challenge your problem-solving skills with an expert-level game or take a break with a quick game on easy mode. Whether you’re a hyper competitive puzzle solver or just looking for a way to relax, a beginner or a master puzzler, Tripledot’s Sudoku ▦ will let you play the game your way. Choose from four different difficulty levels, and customise your experience with features to help or challenge you. Key Features: - Thousands of well-formed, totally free puzzles - The classic Sudoku design, beautifully recreated on your phone - Use the pencil to make notes right on the puzzle - Highlight duplicates to help you solve the puzzle - Challenge yourself by limiting yourself to three mistakes - Use hints to help you find your way through difficult puzzles - - Play Sudoku your way with our finely tuned customisation - Four perfectly crafted difficulty levels: Easy, Medium, Hard, and Expert. - Highlight duplicates to avoid repeating numbers in a row, column, and block - Automatically Check for Mistakes: Enable auto-check to easily spot your mistakes, or disable it to play a more free-form game - Optional Mistake Limit: challenge yourself to play a perfect game, or relax with unlimited mistakes - Pencil mode: Use the pencil mode to make notes on each cell, which automatically update as you play the game - Statistics: See your best times and streaks for every difficulty level - Autosave: Your puzzles save as you go, so you can come back anytime - Hints: Hints can guide you through the puzzle when you are stuck - Eraser: Made a mistake? Get rid of it by using the eraser feature - Unlimited undo's: Eliminate errors using our unlimited undo feature - Customize appearance: Choose from six different beautiful skins for a game that is as easy on the eyes as it is to play By using Sudoku ▦, you agree to our Terms of Use and Community Guidelines available at https://www.tripledotstudios.com/tos Questions? Email Sudoku_support@tripledotstudios.com for help!

Screenshots

Sudoku ′4 screens
Sudoku ▦4 screens

Verdict

The call

Sudoku ′ and Sudoku ▦ both sit at 4.7 stars, but that hides the real split: 82% of Sudoku ′'s written reviews are positive against 38% of Sudoku ▦'s. Sudoku ′ also leads on iOS requirement (12.4 vs 15.0). Sudoku ▦'s advantage is in-app purchases (none vs 1) and update cadence (every 2 weeks vs every 3 months). 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. 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 — 39K and 104K respectively. Written reviews are what separate them: 82% of Sudoku ′'s written reviews are positive against 38% of Sudoku ▦'s.

UpkeepUpdate frequency

Sudoku ′ ships an update every 3 months, Sudoku ▦ every 2 weeks. Both last shipped on November 2, 2026.

Scorecard4 real differences · 6 level
Sudoku ′ versus Sudoku ▦: the parameters behind the verdict, then further details
ParameterSudoku ′Sudoku ▦
PriceFreeFree
Rating4.7 (39K ratings) — better4.7 (104K ratings)
Positive reviews81.5% of reviews — better37.6% of reviews
Number of ratings39K104K — better
Update frequencyEvery 3 monthsEvery 2 weeks — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.4 — better15.0
Further details — not scored
Size6 MB249 MB
Age rating4+12+
DeveloperMind The Frog, Inc.Tripledot Studios Limited

Customer experience

Sudoku ′

All ratings38,355 ratings
Positive94.6%
Neutral3.7%
Negative1.7%
Written reviews557 reviews
Positive81.5%
Neutral6.6%
Negative11.8%

Sudoku ▦

All ratings104,192 ratings
Positive92.9%
Neutral4.5%
Negative2.6%
Written reviews417 reviews
Positive37.6%
Neutral13.7%
Negative48.7%

User reviews

Sudoku ′

From 39K App Store ratings

What we love

  • 👍 Easy to use
  • 🧠 Challenging levels
  • 🎨 Customizable colors
  • 📝 Helpful note-taking feature
  • 🔍 Number highlighting

Room to improve

  • 🔍 Confusing note-taking behavior
  • 🔍 Difficulty level jumps
  • 🔍 Ads interrupting gameplay
  • 🔍 Lack of progress tracking
  • 🔍 Unstable on some devices

Sudoku ▦

From 104K App Store ratings

What we love

  • 🎮 Great game
  • 💡 Challenging levels
  • 📊 Useful statistics and insights
  • 🧠 Brain-stimulating

Room to improve

  • 🤖 Too many ads
  • 🕰️ Ads disrupt gameplay
  • 🔇 Loud ads disrupt audio
  • 🔋 High battery drain

Bugs and requests

Sudoku ′

Reported bugs

4 issues
  • Puzzle errors
  • App crashes
  • Incorrect number placement
  • Sideways orientation on tablets

Requested features

5 requests
  • Ability to stay in note mode
  • More granular difficulty levels
  • Mute option for ads
  • Progress tracking and statistics
  • Improved stability on older devices

Sudoku ▦

Reported bugs

3 issues
  • Freezing and crashing issues
  • Incorrect number placement detection
  • Daily challenge progress not saving properly

Requested features

4 requests
  • Option to pay to remove ads
  • More customization options
  • Ability to reset puzzles
  • Improved performance on older devices

In-app purchases

1 purchases

Sudoku ′

One-time1
  • Remove Ads$1.99
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 39K ratings, while Sudoku ▦ averages 4.7 from 104K 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 3 months, and Sudoku ▦ every 2 weeks. Most recently, Sudoku ′ was updated on November 2, 2026 and Sudoku ▦ on November 2, 2026.

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