Comparison

Sudoku vs Brain Flex IQ Test

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 classic number puzzle game. Offers thousands of daily challenges across four difficulty levels. Features include pencil mode, hints, and duplicate highlighting to aid your gameplay.

Highlights
  • Thousands of puzzles
  • Four difficulty levels
  • Daily challenges
  • Pencil mode
  • Highlight duplicates
  • Hints
  • Offline play
Features
Read full description

Looking for an addictive and challenging puzzle game to give your brain a workout? Look no further than Sudoku - Logic Puzzle game, available on App Store for download on your iphone or ipad. With over 10000+ challenging puzzles to choose from every day, including 100 new puzzles added weekly, there's always a fresh challenge waiting for you. Whether you're a beginner or an advanced player, our app is perfect for you. The rules for sudoku are simple. A 9×9 square must be filled in with numbers from 1-9 with no repeated numbers in each line, horizontally or vertically. To challenge you more, there are 3×3 squares marked out in the grid, and each of these squares can't have any repeat numbers either. Key Features: - With four difficulty levels - easy, medium, hard, and expert - there's a Sudoku puzzle that's perfect for both beginners and advanced players. - Daily Challenges - Complete Daily Challenges and collect trophies. - Pencil Mode - pencil marking involves writing small numbers in each single cell of every possible number that cell could contain. - Highlight Duplicates feature to help you avoid repeating numbers in a row, column, and block. - Hints - guide you through tough spots. - Themes - Choose the light or dark theme that makes it easier for your eyes. - Leaderboard - compete with your friends and people around the world With unlimited undo/redo and an auto-save feature, you can pause and resume your game at any time without losing progress. And with both online and offline modes, you can play Sudoku wherever and whenever you like. And with an intuitive interface, easy controls, and a clear layout, our Sudoku app is perfect for players of all skill levels. If you're a Sudoku lover looking for a fun and challenging puzzle game, download Sudoku Puzzle Game today and join us. And if you have any questions or suggestions, feel free to reach out to us.

About

Brain Flex IQ Test

Test your cognitive abilities with a 50-question assessment covering pattern, logical, numerical, spatial, and verbal reasoning. Challenge friends, track your progress, and explore a vault of puzzles to keep your mind sharp.

Highlights
  • 50-question cognitive assessment
  • Five reasoning areas: pattern, logic, numerical, spatial, verbal
  • Personalized score and performance breakdown
  • Challenge friends and compare scores
  • Brain Flex Vault with puzzles and games
  • Sequence Breaker, Logic Grid, Codebreaker, Mind Maze puzzles
Features
Read full description

# HOW SMART ARE YOU, REALLY? **50 questions. 5 cognitive challenges. One score that might surprise you.** You think fast. You spot patterns. You solve problems. But how sharp is your mind when the questions get harder? Welcome to **Brain Flex** — an IQ-style assessment and brain puzzle experience built for curious minds, competitive thinkers, and people who love a good challenge. Test your reasoning skills, discover your strengths, challenge your friends, and keep pushing yourself with interactive brain games. ## DISCOVER YOUR BRAIN FLEX IQ SCORE Take on 50 carefully structured questions across five areas of cognitive reasoning: • **Pattern Reasoning** — Discover hidden rules and connections. • **Logical Reasoning** — Use deduction and critical thinking to solve problems. • **Numerical Reasoning** — Decode number patterns and relationships. • **Spatial Reasoning** — Challenge your ability to visualize shapes and rotations. • **Verbal Reasoning** — Explore language, meaning, and logical relationships. With multiple difficulty levels, every question brings a new challenge. Complete the assessment in approximately 25–30 minutes to discover your estimated IQ-style score and a personalized breakdown of your reasoning performance. ## THREE GAMES. ENDLESS CHALLENGES. Your IQ assessment is only the beginning. Enter **Brain Flex Vault**, where interactive puzzles put your problem-solving skills to work. **SEQUENCE BREAKER** Spot the hidden pattern. Predict what comes next. See how far your reasoning takes you. **LOGIC GRID** Follow the clues, eliminate possibilities, and find the only answer that makes sense. **CODEBREAKER** Crack secret combinations using deduction, strategy, and a little patience. Earn points, build streaks, beat your personal bests, and take on another challenge whenever you're ready. ## CHALLENGE YOUR FRIENDS Think you have the sharpest mind in your group? Share your results, invite friends to take the assessment, and compare your Brain Flex scores. A little competition makes every challenge more interesting. ## YOUR MIND. YOUR PROGRESS. • Explore Brain Flex with a free account. • Take a 50-question IQ-style assessment with a one-time purchase. • Receive your estimated score and performance breakdown. • Save your results and revisit them anytime. • Unlock Brain Flex Vault with an optional monthly subscription. No complicated setup. Just you, your curiosity, and the next challenge. ## THINK HARDER. SOLVE SMARTER. FLEX YOUR BRAIN. You might be surprised by what you discover. **Download Brain Flex and put your mind to the test.** --- **Important:** Brain Flex provides an estimated IQ-style score for recreational and informational purposes. It is not a professionally administered, standardized, clinical, educational, or diagnostic intelligence examination. Results should not be interpreted as a clinical measurement of intelligence. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Sudoku4 screens
Brain Flex IQ Test4 screens

Verdict

The call

The clearest difference is in-app purchases: Sudoku at none against Brain Flex IQ Test's 2. Sudoku also leads on iOS requirement (12.0 vs 15.0). Brain Flex IQ Test's advantage is ads (none vs shown). On price, rating, ratings volume and update cadence 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. Brain Flex IQ Test sells 2 in-app purchases, starting at $4.99 per month. 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 Brain Flex IQ Test. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

Scorecard4 real differences · 5 level
Sudoku versus Brain Flex IQ Test: the parameters behind the verdict, then further details
ParameterSudokuBrain Flex IQ Test
PriceFreeFree
Rating5.0 (1 ratings)5.0 (2 ratings)
Number of ratings12 — better
Update frequencyEvery 4 daysEvery 4 days
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size65 MB10 MB
Age rating4+4+
DeveloperIvan GluvacevicKirill Shatrov

Customer experience

Sudoku

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Brain Flex IQ Test

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Sudoku

No in-app purchases

2 purchases

Brain Flex IQ Test

Subscriptions1
  • Brain Flex Vault$4.991 Month
One-time1
  • Brain Flex Assessment$4.99

Questions

Is Sudoku free?
Sudoku is free to download, with no in-app purchases.
Is Brain Flex IQ Test free?
Brain Flex IQ Test is free to download, with in-app purchases available.
Which has better reviews, Sudoku or Brain Flex IQ Test?
Sudoku and Brain Flex IQ Test are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.
Do Sudoku or Brain Flex IQ Test have ads?
Sudoku shows ads; Brain Flex IQ Test does not.
Which is updated more often, Sudoku or Brain Flex IQ Test?
Sudoku ships an update every 4 days, and Brain Flex IQ Test every 4 days. Most recently, Sudoku was updated on November 3, 2026 and Brain Flex IQ Test on November 6, 2026.

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