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Chess Opening Blunders

Chess King · Games · United States store
NOT IN TOP 100 HERE
View on App Store ↗ Instagram card
Revenue a month, worldwide EST
$857
Likely $286 to $2.6K
New ratings
Tracking
Daily counts start building from today
Rating
4.7 of 5
247 ratings in this store
Countries it ranks in
0
was 0 on Oct 18, 2026

Revenue

Estimated from the grossing charts of Oct 25, 2026 in the 53 countries we track, and ratings growth on the App Store.

EST. REVENUE / YEAR · WORLDWIDE
$10.3K
13 new ratings a month on average since launch
EST. LIFETIME DOWNLOADS
8.6K to 24.7K
Estimated from ratings count
WHERE ITS USERS ARE · SHARE OF RATINGS
  • Germany 296 ratings34%
  • United States 247 ratings28%
  • Spain 129 ratings15%
  • Italy 61 ratings7%
  • Canada 48 ratings5%
  • United Kingdom 39 ratings4%
  • India 27 ratings3%
  • Australia 11 ratings1%
HOW SURE ARE WE
Not in any grossing chart, so this comes from ratings growth (13 new ratings a month on average since launch): revenue grows with new ratings, more slowly for apps that collect ratings fast. Tested on 418 apps with verified revenue: typically off by about 2 times, and big earners tend to come out low. Countries we don't track (and Google Play in China, which doesn't exist) aren't included, and neither are ads or web payments. Gross revenue before store fees.
RATINGS
247
AVG RATING
4.74
PRICE
Free
AGE
10.1y
LAST UPDATE
3202d ago
VERSION
1.2
SIZE
43 MB
AGE RATING
4+

Last 30 days

From our daily snapshots of every grossing chart.

DAYS IN A GROSSING CHART
0 / 30
COUNTRIES NOW
0 (was 0)
EST. REVENUE FROM CHARTS, DAILY · APP STORE ONLY EST
Show daily values
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Best rank Sep 26, 2026: not ranked. Now: not ranked. Days at zero are days outside every grossing chart.

Money and momentum

Measured from the store, not estimated.

WHAT IT CHARGES
1 purchase listed
  • Full course$12.99
Top in-app purchases as listed on the App Store, in local prices.
REVIEW MOMENTUM
0.0 reviews / week
  • Recent reviews average4.2 stars
  • Recent 1 and 2 star share22%
From the latest 9 written reviews, covering 3608 days.
RELEASE CADENCE
0 updates in 90 days
  • Typical gap between releases46 days
From the last 8 versions listed on the App Store.
RATING BREAKDOWN
247 ratings
5★82%
4★13%
3★2%
2★2%
1★0%

What users say

Latest reviews, United States App Store.

★★★★★Apr 3, 2025
Great potential, but squandered

This game offer no real learning. If you get it, you get it. If you don’t, there are no tutorials, no manual to decipher their color scheme on there hints, no real pedagogy at all. Of all their offerings, this one is the most frustrating in this regard as opening play is far from obvious. At least on an end game, you can understand the strategy and just have to sort out the tactics.

★★★★★Oct 12, 2021
Отличное приложение от лучшего шахматного разработчика!

Отличное приложение, я скачал почти все ваши приложения, но есть одно замечание, иногда кажется что составлял опровержения компьютер, а не человек

★★★★★Feb 13, 2019
Great App

I enjoyed and got a lot out of the examples. Will buy it!!!

★★★★★Feb 11, 2019
Chess

this is a great program I have been using it for a year and it is challenging enough for me to understand

★★★★★Sep 22, 2018
Very helpful and informative

It would be a five star review, but sometimes when you get a tactic wrong it highlights some pieces in either red, yellow or green. No where does it explain what this means so when I see it I’m left asking “what is this supposed to mean?”

★★★★★Jul 26, 2018
Remarkably useful and entertaining.

This may turn out to be my favorite of the several Chess King Apps that I picked up today (during an orgy of gratitude that such apps even exist!) Started from the beginning. Found a position on the screen. Took a second to figure out how to conveniently rewind -- then play back through -- the game, back up to the first shown position (at which a blunder had occurred). Gazed at the screen and tried to figure out how to refute the blunder. Got some feedback on my choice. Realized that going through ALL the available positions should prove to be a wonderful supplement to the tactics practice I was already starting to get from the also terrific Chess Art app. Unfortunately, my regular chess opponents will likely discover these wonderful apps someday, too.

Store screenshots

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App Store ads

Apple Search Ads this app ran in the last 90 days, from Apple's public ad repository.

No App Store ads in the EU
None in the last 90 days.

Apple only publishes ads shown in the EU (EU Digital Services Act), with a 7 day delay. An app that advertises only outside the EU shows nothing here.

Growth research

Where this app is buying and earning its users. Each link opens pre filtered.

ASO keywords

Most repeated terms in the listing. Highlighted ones also appear in the title.

defense35variation15gambit13indian defense11opening7game7indian7program6queen5defense classical5queen gambit5learn4chess4king4system4defense bird3counter gambit3dutch defense3knights game3french defense3classical variation3defense king3king indian3saemisch variation3

What's new in 1.2

• App is updated for iPhone X • New home screen • Disabled automatic playback of refutations • Option to reset password • Renaming of account • Various fixes and improvements

Released Sep 9, 2016. Current version shipped Jan 18, 2018.

Store 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

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