Comparison

Groops vs Chess Opening Blunders

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

Head to head
About

Groops

This puzzle game challenges your mind by matching tiles based on shared or unique attributes. With hundreds of levels and exciting game modes like Time Attack and multiplayer, it offers endless fun and brain stimulation. Compete with friends and unlock achievements.

Highlights
  • Hundreds of levels
  • Time Attack mode
  • Leaderboards
  • Multiplayer mode
  • Unlockable achievements
  • Hint system
Features
Read full description

Groops is a puzzle game that will put your mind to the test. Match tiles three at a time based on either shared or completely unique attributes - the number of possibilities will tie your brain in knots! Keep your mind sharp. Play Groops! • Hundreds of levels of increasing difficulties! • Infinite, unlimited gameplay in “Time Attack” mode. Get to the top of the leaderboards and send your friends Challenge requests to beat your score! • Unlock dozens of Achievements! • Compete against friends in multiplayer mode - who can get the most Groops before time runs out? ********** ~ * Starbucks Pick of the Week in 2014 * ~ “This is an example of why we love games. Simple to understand, but very difficult to master.” - iPlayApps “Groops takes match-three to a whole new level.” - Daniel Celeste, AppAdvice.com “This game is more fun and challenging than my job! With a smooth design and intelligent matching, it is everything I look for to keep my mind stimulated during downtime” - HallelP “Fun but challenging game. Can’t put my phone down once I open this app!” - Stefi592 ********** GAMEPLAY MODES LEVELS - Relax, there’s no time pressure. Find all the possible Groops on the screen to advance. You can use Hints if you get stuck (get more by playing TIME ATTACK or from the Powerups menu). TIME ATTACK - Find as many Groops as possible before time runs out! Make 5 Groops in a row to increase your multiplier, but be careful! If you make an invalid Groop, your multiplier gets reset. Rack up as many points as possible because your score gets added to your points bank. ********** OK, HOW DO I PLAY? Match 3 tiles to make a Groop. Tiles have 4 attributes with three options each - SHAPE (square, circle, leaf), COLOR (blue, magenta, yellow), PATTERN (solid fill, striped fill, border only), and SYMBOL (diamond, hourglass, and its 3rd option is no symbol at all). Finding identical tiles is easy, but you’ll eventually need to make Groops based on mixed attributes, and thats where we kick your brain into full-throttle. Groops can be made by matching tiles with identical attributes, by matching all 3 options of 1 attribute, or by matching three different options across multiple attributes. For example: • Solid blue square with no symbol, solid blue circle with no symbol, and a solid blue leaf with no symbol. (Same shape - square, same color - blue, same pattern - solid, all different symbols) • Striped blue square with no symbol, solid magenta circle with a diamond, bordered yellow leaf with an hourglass (All different shapes, all different colors, all different patterns, all different symbols) NOTE: To make a Groop, either all options are the same, or all different across the attributes. For example, these would be invalid: • Solid blue square with no symbol, solid blue square with no symbol, solid blue circle with no symbol (two squares and a circle, instead of three squares, or one square, one circle, and one leaf) • Bordered magenta circle with a diamond, solid yellow circle with a diamond, solid yellow circle with an hourglass (Invalid for two reasons: 1) two yellows and a magenta instead of three yellows or one yellow, one magenta, and one blue. 2) two diamonds and an hourglass instead of three diamonds or one diamond, one hourglass, and one without any symbol at all) ********** Follow @play_groops on Twitter

About

Chess Opening Blunders

Learn chess by studying common opening mistakes and traps. This app offers interactive lessons with over 1,250 exercises across more than 40 openings, acting as a personal coach to guide you through challenges.

Highlights
  • Learn opening mistakes and traps
  • Over 1,250 instructive exercises
  • Covers more than 40 chess openings
  • Interactive lessons with hints and explanations
  • Play positions against the computer
  • Monitors player rating (ELO)
Features
Read full description

Encyclopedia of Opening Blunders – learn to play chess by learning the opening mistakes and traps that have been discovered over time. The program is designed for studying the blunders in more than 40 openings and contains over 1,250 instructive exercises of varying difficulty from practical games. This course is in the series Chess King Learn (https://learn.chessking.com/), which is an unprecedented chess teaching method. In the series are included courses in tactics, strategy, openings, middle game, and endgame, split by levels from beginners to experienced players, and even professional players. With the help of this course, you can improve your chess knowledge, learn new tactical tricks and combinations, and consolidate the acquired knowledge into practice. The program acts as a coach who gives tasks to solve and helps to solve them if you get stuck. It will give you hints, explanations and show you even striking refutation of the mistakes you might make. Advantages of the program: • High quality examples, all double-checked for correctness • You need to enter all key moves, required by the teacher • Different levels of complexity of the tasks • Various goals, which need to be reached in the problems • The program gives hint if an error is made • For typical mistaken moves, the refutation is shown • You can play out any position of the tasks against the computer • Interactive theoretical lessons • Structured table of contents • The program monitors the change in the rating (ELO) of the player during the learning process • Test mode with flexible settings • Possibility to bookmark favorite exercises • The application is adapted to the bigger screen of a tablet • The application does not require an internet connection The course includes a free part, in which you can test the program. Lessons offered in the free version is fully functional. They allow you to test the application in real world conditions before releasing the following topics: 1. Rare variations 1.1. 1.g3, 1.b4, .. 1.2. 1.b3 1.3. 1.d4 1.4. 1.d4 Nf6 1.5. 1.d4 Nf6 2.Nf3 2. Alekhine's defense 3. Benoni defense 4. Bird's opening 5. Bishop's opening 6. Blumenfeld counter-gambit 7. Bogo-indian defense 8. Budapest gambit 9. Caro-Kann 10. Catalan system 11. Center gambit 12. Dutch defense 12.1. Dutch defense 12.2. Iljin Genevsky system 12.3. Leningrad system 12.4. Staunton gambit 12.5. Stonewall variation 13. English opening 14. Evans gambit 15. Four knights' game 16. French defense 16.1. French defense 16.2. Classical variation 16.3. Tarrasch variation 16.4. Winawer variation 17. Grünfeld defense 18. Italian game & Hungarian defense 19. King's gambit 20. King's indian defense 20.1. King's indian defense 20.2. Classical variation 20.3. Fianchetto variation 20.4. Four pawns' attack 20.5. Saemisch variation 21. Latvian gambit 22. Nimzo-indian defense 22.1. Nimzo-indian defense 22.2. Leningrad variation 22.3. Rubinstein variation 22.4. Saemisch variation 23. Nimzowitsch defense 24. Old indian defense 25. Philidor's defense 26. Pirc-Robatsch defense 27. Queen's gambit 27.1. Queen's gambit 27.2. Queen's gambit accepted 27.3. Albin counter-gambit 27.4. Cambridge-Springs variation 27.5. Exchange variation 27.6. Orthodox defense 27.7. Lasker defense 27.8. Tartakower defense 27.9. Ragozin system 27.10. Semi-Slav defense 27.11. Semi-Tarrasch defense 27.12. Slav defense 27.13. Tarrasch defense 27.14. variation with 5.Bf4 28. Queen's indian defense 29. Queen's pawn game 30. Reti opening 31. Petroff's defense 32. Ruy Lopez 32.1. Ruy Lopez 32.2. Berlin defense 32.3. Bird's defense 32.4. Breyer variation 32.5. Chigorin defense 32.6. Classical defense 32.7. Exchange variation 32.8. Marshall attack 32.9. Steinitz defense deferred 32.10. Steinitz defense 33. Scandinavian defense 34. Scotch gambit & Ponziani's opening 35. Scotch game 36. Sicilian defense 37. Three knights' game 38. Two knights' defense 39. Vienna game 40. Volga-Benko gambit

Screenshots

Groops4 screens
Chess Opening Blunders4 screens

Verdict

The call

The clearest difference is rating: Chess Opening Blunders at 4.7 against Groops's 4.3. Groops's advantage is update cadence (every 8 days vs every 2 months). 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. Groops sells 6 one-off in-app purchases and Chess Opening Blunders sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Chess Opening Blunders holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 675 and 246 respectively. Written reviews complicate that: 86% of Groops's written reviews are positive against 84% of Chess Opening Blunders's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Groops ships an update every 8 days, Chess Opening Blunders every 2 months. The most recent releases landed on July 4, 2026 and September 18, 2026 respectively.

Scorecard2 real differences · 8 level
Groops versus Chess Opening Blunders: the parameters behind the verdict, then further details
ParameterGroopsChess Opening Blunders
PriceFreeFree
Rating4.3 (675 ratings)4.7 (246 ratings) — better
Positive reviews85.6% of reviews — better84.1% of reviews
Number of ratings675 — better246
Update frequencyEvery 8 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.08.0
Further details — not scored
Size12 MB43 MB
Age rating4+4+
DeveloperTorched Media LLCChess King

Customer experience

Groops

All ratings675 ratings
Positive81.3%
Neutral9.5%
Negative9.2%
Written reviews97 reviews
Positive85.6%
Neutral5.2%
Negative9.3%

Chess Opening Blunders

All ratings246 ratings
Positive95.1%
Neutral2.4%
Negative2.4%
Written reviews44 reviews
Positive84.1%
Neutral4.5%
Negative11.4%

Bugs and requests

Groops

Reported bugs

4 issues
  • Level 10 of 'brainz needed' bonus pack won't let user progress
  • Crash after time attack finishes
  • Level 45 of easy 4x4 board shows '0/ ' and crashes
  • Win not recognized in local multiplayer

Requested features

4 requests
  • More levels and boards
  • Ability to reset level scores
  • Endless mode
  • Ability to see previous groops found

Chess Opening Blunders

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Groops

One-time6
  • pack of 50 Board Shuffles$0.99
  • pack of 10 Hints$0.99
  • pack of 5,000 Points$0.99
Show 3 more
  • 3x3 Bonus Pack 1$1.99
  • pack of 20,000 Points$2.99
  • pack of 100,000 Points$12.99
1 purchases

Chess Opening Blunders

One-time1
  • Full course$12.99

Questions

Is Groops free?
Groops is free to download, with in-app purchases available.
Is Chess Opening Blunders free?
Chess Opening Blunders is free to download, with in-app purchases available.
Which has better reviews, Groops or Chess Opening Blunders?
Chess Opening Blunders is rated higher. Groops averages 4.3 out of 5 from 675 ratings, while Chess Opening Blunders averages 4.7 from 246 ratings.
Do Groops or Chess Opening Blunders have ads?
Neither Groops nor Chess Opening Blunders shows ads.
Which is updated more often, Groops or Chess Opening Blunders?
Groops ships an update every 8 days, and Chess Opening Blunders every 2 months. Most recently, Groops was updated on July 4, 2026 and Chess Opening Blunders on September 18, 2026.

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