Comparison

Chess Opening Blunders vs Chess

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

Head to head
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

About

Chess

Enhance your chess skills with over 1500 tactical exercises drawn from real games. This app provides hints, explanations, and refutations to help beginners improve their play and learn new combinations. It acts as a personal coach, adapting to your progress and offering interactive lessons.

Highlights
  • Over 1500 tactical exercises
  • Hints and explanations
  • Refutations of mistakes
  • Interactive theoretical lessons
  • Progress monitoring (ELO rating)
  • Offline play
Features
Read full description

If you are a beginner, you just cannot afford to give away your piece in 1 move, presuming, of course, that you wish to improve your play! Another thing you cannot afford is to miss a chance of grabbing an undefended piece of your opponent's! This course includes more than 1500 exercises with lots of pieces on the board. Such a great number of exercises makes this course an excellent tool for quick training of chess beginners. The course is intended for players who are already acquainted with the rules of the game. Even if you study and solve only 20% of exercises you are sure to improve your chess skills and not to miss a chance to take an undefended piece in your practical game! All the exercises are taken from practical games and arranged according to the names of pieces and difficulty levels. 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. Part 1 1.1. Winning a knight 1.2. Winning a bishop 1.3. Winning a rook 1.4. Winning a queen 2. Part 2. Win a piece 2.1. Level 1 2.2. Level 2 2.3. Level 3 2.4. Level 4 2.5. Level 5 2.6. Level 6 2.7. Level 7 2.8. Level 8

Screenshots

Chess Opening Blunders4 screens
Chess4 screens

Verdict

The call

The clearest difference is ratings volume: Chess Opening Blunders at 246 against Chess's 11. Chess Opening Blunders also leads on rating (4.7 vs 4.5). Chess's advantage is review sentiment (100% vs 84%). On price, update cadence, ads and in-app purchases 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. Chess Opening Blunders sells 1 one-off in-app purchase and Chess 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 4.5. That said, the two scores are not equally well evidenced: Chess Opening Blunders has 246 ratings behind it against 11, so its average is the more settled of the two. Written reviews complicate that: 84% of Chess Opening Blunders's written reviews are positive against 100% of Chess's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Chess Opening Blunders ships an update every 2 months, Chess every 6 weeks. The most recent releases landed on September 18, 2026 and September 10, 2026 respectively.

Scorecard3 real differences · 7 level
Chess Opening Blunders versus Chess: the parameters behind the verdict, then further details
ParameterChess Opening BlundersChess
PriceFreeFree
Rating4.7 (246 ratings) — better4.5 (11 ratings)
Positive reviews84.1% of reviews100.0% of reviews — better
Number of ratings246 — better11
Update frequencyEvery 2 monthsEvery 6 weeks — better
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
Size43 MB42 MB
Age rating4+4+
DeveloperChess KingChess King

Customer experience

Chess Opening Blunders

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

Chess

All ratings11 ratings
Positive81.8%
Neutral9.1%
Negative9.1%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Chess Opening Blunders

One-time1
  • Full course$12.99
1 purchases

Chess

One-time1
  • Full course$3.99

Questions

Is Chess Opening Blunders free?
Chess Opening Blunders is free to download, with in-app purchases available.
Is Chess free?
Chess is free to download, with in-app purchases available.
Which has better reviews, Chess Opening Blunders or Chess?
Chess Opening Blunders is rated higher. Chess Opening Blunders averages 4.7 out of 5 from 246 ratings, while Chess averages 4.5 from 11 ratings.
Do Chess Opening Blunders or Chess have ads?
Neither Chess Opening Blunders nor Chess shows ads.
Which is updated more often, Chess Opening Blunders or Chess?
Chess Opening Blunders ships an update every 2 months, and Chess every 6 weeks. Most recently, Chess Opening Blunders was updated on September 18, 2026 and Chess on September 10, 2026.

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