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Chess Opening Lab (1400-2000) icon
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Chess Opening Lab (1400-2000)

Chess King · Games · United States store
NOT IN TOP 100 HERE
View on App Store ↗ Instagram card Google Play version →
Revenue a month, worldwide EST
$678
Likely $226 to $2K
New ratings
Tracking
Daily counts start building from today
Rating
4.7 of 5
593 ratings in this store
Countries it ranks in
0
was 0 on Oct 16, 2026

Revenue

Estimated from the grossing charts of Oct 23, 2026 in the 53 countries we track, and ratings growth on the App Store.

EST. REVENUE / YEAR · WORLDWIDE
$8.1K
7.9 new ratings a month on average since launch
EST. LIFETIME DOWNLOADS
20.8K to 59.3K
Estimated from ratings count
WHERE ITS USERS ARE · SHARE OF RATINGS
  • United States 593 ratings62%
  • United Kingdom 70 ratings7%
  • Canada 51 ratings5%
  • Germany 46 ratings5%
  • France 35 ratings4%
  • India 26 ratings3%
  • Netherlands 21 ratings2%
  • Philippines 19 ratings2%
HOW SURE ARE WE
Not in any grossing chart, so this comes from ratings growth (7.9 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
593
AVG RATING
4.71
PRICE
Free
AGE
10.1y
LAST UPDATE
3203d ago
VERSION
1.2
SIZE
45 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 · BOTH STORES ONLY EST
Show daily values
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Best rank Sep 24, 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 average3.2 stars
  • Recent 1 and 2 star share50%
From the latest 12 written reviews, covering 3682 days.
RELEASE CADENCE
0 updates in 90 days
  • Typical gap between releases101 days
From the last 7 versions listed on the App Store.
RATING BREAKDOWN
593 ratings
5★81%
4★13%
3★3%
2★1%
1★2%

What users want

From the latest 12 reviews on the United States App Store, Sep 23, 2016 to Oct 12, 2023: 50% are 1 or 2 stars. Open a theme to read what people wrote.

WHAT THEY COMPLAIN ABOUT · SHARE OF BAD REVIEWS
Wrong or poor results50%

3 of the 1 and 2 star reviews.

★★★★★ I have had to “buy full course” three times because there is no log in and it seems to forget conveniently Recent opening version is awful relative to chess base It misses multiple important variations and openings (…
★★★★★ Plus, Chess Kings's interface (common across all their software) is also terrible; it shows you refutations and variations, which is great, but you can't skip them or save them for later, and there are so many of them…
Price and subscription33%

2 of the 1 and 2 star reviews.

★★★★★ I will report this scam to apple.
★★★★★ I just bought this app for £5.50 My son Delet the app by mistake So when I try to reinstall it They ask me to pay another £5.50 I lost my money for no reason
WHAT THEY ASK FOR
  • I've learned a lot so far about how openings work.I just wish there were more examples of the opening systems. 5★, Jan 28, 2023
  • It would be great to give 20 or more examples of the different openings if at all possible. 5★, Jan 28, 2023
  • We just need more examples/ exercises of them. 5★, Jan 28, 2023
WORDS THAT KEEP COMING UP IN BAD REVIEWS

Nothing stands out.

WHAT THEY LOVE · SHARE OF GOOD REVIEWS
Easy to use33%

2 of the 4 and 5 star reviews.

★★★★★ The interface/ layout and idea/ concept are very good and easy to follow.
★★★★★ Just started using and find it easy to use.

Found by matching words and phrases in the reviews, not read by a person. A review can count toward more than one theme.

What users say

Latest reviews, United States App Store.

★★★★★Oct 12, 2023
Terrible app

Barely any information and very difficult and confusing to work

★★★★★Jan 28, 2023
Great app but need a lot more exercises of the different openings.

It’s a really good app. I’ve learned a lot so far about how openings work.I just wish there were more examples of the opening systems. I rather like the Leningrad Dutch and want to learn more about it but you give only one example (sic) that said, the example given is very powerful. It would be great to give 20 or more examples of the different openings if at all possible. After studying some of the examples I was blasting my opponents of the board! The interface/ layout and idea/ concept are very good and easy to follow. We just need more examples/ exercises of them. Cheers

★★★★★Aug 4, 2022
No content

Demonstrates how to gain your opponent’s confidence without giving them anything useful. Clever but useless.

★★★★★Feb 27, 2022
Great for chess studies!

I lik

★★★★★Jul 19, 2020
Chris Scannell

Fantastic teaching tool-👍

★★★★★Jul 14, 2020
Bugs, useless

I have had to “buy full course” three times because there is no log in and it seems to forget conveniently Recent opening version is awful relative to chess base It misses multiple important variations and openings ( eg no London System) Not sure how the teaching is any better

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.

defense20game9gambit9opening8indian defense8program6chess5players5moves5indian5openings4course4opening manual3key moves3moves board3dutch defense3knights game3french defense3defense queen3theoretical3variation3tasks3lessons3test3

What's new in 1.2

• App is updated for iPhone X • New home screen • Renaming of account • Various fixes and improvements

Released Sep 9, 2016. Current version shipped Jan 15, 2018.

Store description

This is a perfect opening manual. It features a theoretical review of all the chess openings, which are illustrated by instructive games of the greatest chess players. This compact opening manual contains a detailed classification, which makes it useful to players of any level - beginners, intermediate and advanced players. Each opening variation is supplied with evaluations and characteristics of key moves. The history of the variations' development is described, as well as their current status. The theoretic material is nicely illustrated by classic games with detailed annotations that demonstrate the principal ideas and plans of each variation for White and Black. There is also a special training section with more than 350 exercises of various difficulty on more than 40 openings. This course is in the series Chess King Learn, 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. The program also contains a theoretical section, which explains the methods of the game in a certain stage of the game, based on actual examples. The theory is presented in an interactive way, which means you can not only read the text of the lessons, but also to make moves on the board and work out unclear moves on the board. 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. Ilyin-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 17. Grünfeld defense 18. Italian game & Hungarian defense 19. King's Indian defense 20. Latvian gambit 21. Nimzo-Indian defense 22. Nimzowitsch defense 23. Old Indian defense 24. Philidor's defense 25. Pirc-Robatsch defense 26. Queen's gambit 27. Queen's Indian defense 28. Queen's pawn game 29. Reti opening 30. Petrov's defense 31. Ruy Lopez 32. Scandinavian defense 33. Scotch gambit & Ponziani's opening 34. Scotch game 35. Sicilian defense 36. Three knights' game 37. Two knights' defense 38. Vienna game 39. Volga-Benko gambit 40. The complete course of openings

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