Comparison

Sudoku | Keep your mind sharp! vs Solitaire World

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Sudoku | Keep your mind sharp!

Engage in the classic numbers game with thousands of free Sudoku puzzles. Suitable for all skill levels, this app offers features to help you relax, sharpen your mind, and track your progress. Enjoy customizable themes and unlimited hints for a seamless puzzle experience.

Highlights
  • Thousands of free puzzles
  • Note-taking feature
  • Customizable themes
  • Multiple difficulty levels
  • Statistics tracking
  • Unlimited hints
  • Cell, row, and column highlighting
Features
Read full description

Keep your mind sharp as you play Sudoku, the classic numbers game. Classic Sudoku for beginners and experts. Thousands of free puzzles to clear your mind and relax. Whether you are looking for a relaxing puzzle experience, or a brain testing mind bender, our Sudoku has you covered. Sharpen your mind with just a few games a day. - Thousands of FREE puzzles. - All the features you need for a perfect game of Sudoku. - Take notes that automatically update as you solve numbers on the puzzle board. - Pick your favorite theme from light to dark to suit your mood. - Difficulty levels from easy to expert, with over 1,000 puzzles for each level. - Track your statistics for each difficulty level. - Cell, row, and column highlights for enhanced gameplay and a great user experience. - Use hints if you get stuck. Hints are unlimited, so you are not penalized for using them! - Simple, clean, and easy to understand gameplay. - Free updates with improvements, themes, and more Sudoku puzzles. If you love brain training exercises, calm puzzle games, and classic Sudoku, please give it a try. Thank you for playing! Love the app? Give us a five star rating, write a review and share the app with your friends! Need Help? Let us know here: https://loyalfoundry.atlassian.net/servicedesk/customer/portal/1 Privacy Policy and Terms of Use: https://www.loyal.app/privacy-policy

About

Solitaire World

Enjoy a classic card game with a modern twist, featuring beautiful design, multiple game modes, and customization options. Compete against others, track your progress, and unlock achievements. Players can also earn real cash for wins and high scores.

Highlights
  • Classic Spider Solitaire gameplay
  • Earn real cash for wins
  • Multiple game modes
  • Beautiful design and animations
  • Customization options
  • Achievements and rewards
  • Compete against other players
Features
Read full description

Solitaire world is the classic, beloved card game that has been around for centuries. This solitaire app aims to bring the classic card game to a digital platform and make it easy, accessible, and fun for users to play. It is accompanied by a beautiful design with various color themes and animation effects. The app also features multiple game modes, a wide range of customisation, and multiple achievements for users to unlock. The game is designed to appeal to players of all skill levels, from beginners to experienced solitaire masters. The app focuses on intuitive game play, allowing users to quickly understand the rules of the game and easily navigate between different rounds. With each round taking less than a few minutes, it's an ideal way to take a break from a stressful day or have a few rounds on a phone or tablet. The game also encourages users to think strategically and make informed decisions, develop tactical skills, and develop their game playing abilities. Features of Solitaire World: Classic Spider Solitaire game play Easy to learn and navigate Beautiful design with various color themes Multiple game modes Earn real cash for each win Rewards for scoring high Bonus rewards when unlocked Compete against other players Track your progress over time Compare scores with friends Multiple achievements Quick rounds Appealing to players of all skill levels Innovative twist to the classic card game Solitaire app offers users the chance to not just enjoy the classic card game, but also to potentially earn some cash. Players can compete with other users and receive rewards for each round they win, in addition to bonus rewards when certain challenges are completed. They can also visit the app store to purchase special cards and decks to use in their games. With Solitaire World, users can enjoy the classic spider solitaire card game with a modern touch. Whether they are an experienced solitaire master or a beginner, this app allows for a fun and accessible experience for everyone. By providing a wide range of customisation and game modes, the game allows for a different experience each time. With intuitive game play and quick rounds, this is the perfect way to take a break from the daily busy life.

Screenshots

Sudoku | Keep your mind sharp!4 screens
Solitaire World4 screens

Verdict

The call

The clearest difference is rating: Sudoku | Keep your mind sharp! at 4.7 against Solitaire World's 3.0. Sudoku | Keep your mind sharp! also leads on review sentiment (67% vs 33%) and ratings volume (226 vs 8). Solitaire World's advantage is ads (none vs shown) and iOS requirement (12.0 vs 15.0). On price, update cadence, in-app purchases and monetization model 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 | Keep your mind sharp! sells 2 in-app purchases, starting at $0.99 per month and Solitaire World sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Sudoku | Keep your mind sharp! holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Sudoku | Keep your mind sharp! has 226 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 67% of Sudoku | Keep your mind sharp!'s written reviews are positive against 33% of Solitaire World's.

UpkeepUpdate frequency

Sudoku | Keep your mind sharp! ships an update every 5 weeks, Solitaire World every 3 weeks. Both last shipped on November 3, 2026.

Scorecard5 real differences · 5 level
Sudoku | Keep your mind sharp! versus Solitaire World: the parameters behind the verdict, then further details
ParameterSudoku | Keep your mind sharp!Solitaire World
PriceFreeFree
Rating4.7 (226 ratings) — better3.0 (8 ratings)
Positive reviews66.7% of reviews — better33.3% of reviews
Number of ratings226 — better8
Update frequencyEvery 5 weeksEvery 3 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size186 MB218 MB
Age rating4+17+
DeveloperLoyal Foundry, Inc.GameNexa Studios Private Limited

Customer experience

Sudoku | Keep your mind sharp!

All ratings222 ratings
Positive91.9%
Neutral4.5%
Negative3.6%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Solitaire World

All ratings8 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews6 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

In-app purchases

2 purchases

Sudoku | Keep your mind sharp!

Subscriptions1
  • Premium Access3 Days trial$0.991 Month
One-time1
  • Sudoku Remove Ads$3.99
3 purchases

Solitaire World

One-time3
  • Unlock Everything for FreeFree
  • Unlock Everything Discount$12.99
  • Unlock Everything$49.99

Questions

Is Sudoku | Keep your mind sharp! free?
Sudoku | Keep your mind sharp! is free to download, with in-app purchases available.
Is Solitaire World free?
Solitaire World is free to download, with in-app purchases available.
Which has better reviews, Sudoku | Keep your mind sharp! or Solitaire World?
Sudoku | Keep your mind sharp! is rated higher. Sudoku | Keep your mind sharp! averages 4.7 out of 5 from 226 ratings, while Solitaire World averages 3.0 from 8 ratings.
Do Sudoku | Keep your mind sharp! or Solitaire World have ads?
Sudoku | Keep your mind sharp! shows ads; Solitaire World does not.
Which is updated more often, Sudoku | Keep your mind sharp! or Solitaire World?
Sudoku | Keep your mind sharp! ships an update every 5 weeks, and Solitaire World every 3 weeks. Most recently, Sudoku | Keep your mind sharp! was updated on November 3, 2026 and Solitaire World on November 3, 2026.

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