Comparison

Sudoku vs Untangle

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 mind with a vast collection of classic and innovative Sudoku puzzles. Master solving techniques with an exclusive hint system, track your progress with detailed statistics, and compete globally. Enjoy multiple variations and a custom puzzle builder for endless logic challenges.

Highlights
  • 15,000+ free Sudoku puzzles
  • 10 unique Sudoku variations
  • Exclusive step-by-step hint system
  • Custom puzzle builder
  • Global player competitions
  • Detailed career statistics
  • Ad-free premium option
Features
Read full description

Looking for the ultimate mental escape? Welcome to Sudoku by Volcano—the world’s most vibrant puzzle community! From thrilling global tournaments to infinite player-created grids, your daily brain workout just got a major upgrade. Perfect for a 5-minute coffee break or hours of deep logic training, our classic and innovative puzzles offer endless fun for everyone, from beginners to grandmasters. With 365 days of Daily Puzzles, international rankings, and endless creative challenges, your mind will always stay sharp! ◆ Why Choose Sudoku by Volcano? We offer a premium, feature-rich experience that no other classic puzzle app can match: • NEW! Puzzle Workshop: Step into our thriving creator community! You are no longer just a player—you are a puzzle designer. Create your own custom grids from scratch, scan them directly from a newspaper, share your masterpieces with the world, and play infinite unique puzzles crafted by global players. • Champions Challenge & Global Leaderboards: Battle logic enthusiasts worldwide in thrilling daily competitions. Track your rank against millions of active players, win exclusive rewards, and climb to the top spot to earn your bragging rights as a true Sudoku Champion. • Non-Stop Daily Challenges: Never miss a day of mental fitness. Log in daily to solve unique, hand-crafted puzzles, build your consecutive win streaks, and collect gorgeous monthly trophies and champion badges. • Exclusive Hint System (Sudoku Solver): This is not just a cheat sheet! Our intelligent system teaches you advanced solving techniques step-by-step with intuitive instructions, colorful visuals, and elegant animations. Go from beginner to expert in no time. ◆ Core Game Features & Variations Enjoy 8 tailored difficulty levels—from Very Easy to Extreme—alongside multiple ways to play: • 10 Brain Teaser Variations: Challenge yourself with Squiggly, X-Sudoku, Color puzzles, and alternative grid layouts. • Daily Puzzle Archive: Missed a day? Access past Daily Challenges from the archive to complete your trophy collection anytime. • Career Statistics: Access detailed profile stats to track your logic improvement, win streaks, and best solve times. • Beautiful Visuals: Personalize your board with stunning designs and alternative numerals, including Chinese numbers. • Offline Mode: Enjoy your favorite mindsport anywhere, anytime—no internet connection required for official packs and saved daily grids. ◆ Smart Tools & Quality of Life Maximize your solving efficiency while protecting your eyes during night-time play: • Intelligent Assist: Auto-highlighting of identical numbers, automatic pencil marks, and real-time error checking. • Standard Tools: Unlimited Undo & Redo, Double-Tap Erase, and smart drafting notes. • Seamless Convenience: Auto-Save ensures you never lose progress when life interrupts your game. Toggle Dark Mode for a more comfortable night-time experience. • Universal Design: Stunning high-resolution graphics optimized perfectly for both iPhone and iPad. Download the ultimate Sudoku experience today! Wake up your brain with a fresh Daily Challenge, unleash your creativity in the Puzzle Workshop, and see where you stand on the global stage!

About

Untangle

Engage your mind with a variety of logic puzzles where the goal is to untangle intersecting wires. Progress through increasingly challenging levels, turning red intersections green as you solve each brain teaser. This game offers a fun way to enhance your thinking skills and boost your IQ.

Highlights
  • Logic puzzles
  • Wire untangling challenges
  • Progressive difficulty levels
  • Brain training
  • IQ enhancement
Features
Read full description

Untie - logic puzzles. The game has many riddles. In the beginning there are easy puzzles and later the logic puzzles are more difficult. The purpose of the game is to untie the wires. if wires intersect, they are painted with red. once you will solve the logic puzzle, the dots will become green and you can move to the next level. this is a great way to train your thinking and increase your brain IQ. we have more brain teasers games, so check them out

Screenshots

Sudoku4 screens
Untangle2 screens

Verdict

The call

The clearest difference is update cadence: Sudoku at every 3 months against Untangle's every 38 months. Sudoku also leads on rating (4.6 vs 4.3). Untangle's advantage is monetization model (ad-supported vs free with in-app purchases) and iOS requirement (9.0 vs 15.6). On price, review sentiment, 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Sudoku holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 222 and 147 respectively. Written reviews point the same way: 72% of Sudoku's written reviews are positive against 70% of Untangle's.

UpkeepUpdate frequency

Sudoku ships an update every 3 months, Untangle every 38 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

Scorecard4 real differences · 6 level
Sudoku versus Untangle: the parameters behind the verdict, then further details
ParameterSudokuUntangle
PriceFreeFree
Rating4.6 (222 ratings) — better4.3 (147 ratings)
Positive reviews72.4% of reviews — better70.0% of reviews
Number of ratings222 — better147
Update frequencyEvery 3 months — betterEvery 38 months
AdsYesYes
In-app purchasesNoNo
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.69.0 — better
Further details — not scored
Size58 MB96 MB
Age rating4+4+
DeveloperVolcano Entertainment LimitedAvraham Shlomo Ofir

Customer experience

Sudoku

All ratings216 ratings
Positive92.1%
Neutral3.2%
Negative4.6%
Written reviews98 reviews
Positive72.4%
Neutral9.2%
Negative18.4%

Untangle

All ratings147 ratings
Positive84.4%
Neutral7.5%
Negative8.2%
Written reviews30 reviews
Positive70.0%
Neutral13.3%
Negative16.7%

User reviews

Sudoku

From 222 App Store ratings

What we love

  • 👍 Great game for time passing
  • 🧠 Stimulates the mind
  • 💡 Good for logic training
  • ✨ Simple and clean interface
  • 🌟 Many levels and variations

Room to improve

  • 💸 Too many ads
  • ⏳ Long ads (60 seconds)
  • 😵 Ads interrupt music playback
  • 😵 Ads block gameplay
  • 🎨 Dark mode not remembered

Untangle

From 147 App Store ratings

What we love

  • 👍 Fun and challenging gameplay
  • 🧠 Great brain teaser
  • 😌 Relaxing and peaceful to play
  • ✨ Good graphics
  • 💡 Interesting concept

Room to improve

  • 😠 Excessive ads
  • 🔞 Porn ads in kids game
  • 🔊 Loud ads with sound
  • 🔄 Repetitive gameplay
  • 📱 Difficult to play on small screen

Bugs and requests

Sudoku

Reported bugs

22 issues
  • Interface issues and crashes
  • Checkpoint save/restore bugs
  • Puzzle reset bugs
  • Menu becomes hidden
  • App terminates and resets puzzle
Show 17 more
  • Reset command does nothing
  • Cloud data access lost
  • Game progress lost
  • Video ads for coins not loading
  • Color scheme resets on app open/minimize
  • Digit highlighted as completed when using pencil
  • Statistics display cannot be closed
  • Automatic pencil correction doesn't work/disable
  • Custom puzzles not remembered after solving
  • Saved checkpoints not remembered
  • Progress resets after completing a puzzle
  • Coins reset when switching devices
  • Puzzles reset to start state after saving/restoring
  • App not opening/crashing
  • Settings not saving (e.g., sound effects)
  • Deleted records reappear
  • Ad reward system bug (doubling/tripling coins)

Requested features

14 requests
  • Fix color theme persistence
  • Add highlighting for pencil marks
  • Option to disable automatic pencil mark deletion
  • Improve puzzle generation logic
  • Allow music playback during gameplay
Show 9 more
  • Make ads less intrusive or optional
  • Improve checkpoint save/restore functionality
  • Fix cloud data access issues
  • Option to flag wrong numbers immediately
  • Less contrast for dark mode
  • Tinted overlay on ad area
  • Fix custom puzzle saving
  • Fix statistics display closing issue
  • Fix ad reward system bug

Untangle

Reported bugs

2 issues
  • Ads turn the game vertical
  • Orbs get stuck in positions

Requested features

7 requests
  • Chart or visual for level progress
  • Ability to skip or go back to levels
  • Challenge friends to beat levels
  • Color options for the game
  • More levels beyond 140
Show 2 more
  • Option to remove ads by paying
  • Keep the game simple, remove fireworks

In-app purchases

None

Sudoku

No in-app purchases

None

Untangle

No in-app purchases

Questions

Is Sudoku free?
Sudoku is free to download, with no in-app purchases.
Is Untangle free?
Untangle is free to download, with no in-app purchases.
Which has better reviews, Sudoku or Untangle?
Sudoku is rated higher. Sudoku averages 4.6 out of 5 from 222 ratings, while Untangle averages 4.3 from 147 ratings.
Do Sudoku or Untangle have ads?
Both Sudoku and Untangle show ads.
Which is updated more often, Sudoku or Untangle?
Sudoku ships an update every 3 months, and Untangle every 38 months. Most recently, Sudoku was updated on November 1, 2026 and Untangle on November 2, 2026.

Other comparisons