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Chess Opening Lab (1400-2000) icon
GOOGLE PLAY

Chess Opening Lab (1400-2000)

Chess King · Board · Japan store
NOT IN TOP 100 HERE
View on Google Play ↗ Instagram card App Store version →
Revenue a month, worldwide EST
$678
Likely $226 to $2K
New ratings
Tracking
Daily counts start building from today
Countries it ranks in
0
was 0 on Oct 15, 2026

Revenue

Estimated from the grossing charts of Oct 21, 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
LIFETIME INSTALLS (GOOGLE)
453.7K
About 3.5K per month on average since launch
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
n/a
AVG RATING
n/a
PRICE
Free
IN APP PURCHASES
¥2,000 per item
CONTAINS ADS
Yes
LAST UPDATE
86d ago
RELEASED
Dec 24, 2015
CONTENT RATING
Rated for 3+

Last 29 days

From our daily snapshots of every grossing chart.

DAYS IN A GROSSING CHART
0 / 29
COUNTRIES NOW
0 (was 0)
EST. REVENUE FROM CHARTS, DAILY · BOTH STORES ONLY EST
Show daily values
Sep 24, 2026not in a grossing chart
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Oct 22, 2026not in a grossing chart
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
¥2,000 per item
Google Play only shows the price range per item.
REVIEW MOMENTUM
0.5 reviews / week
  • Trendfalling
  • Recent reviews average4.1 stars
  • Recent 1 and 2 star share18%
From the latest 268 written reviews, covering 3947 days.

What users want

From the latest 268 reviews on the Japan Google Play, Jan 1, 2016 to Sep 15, 2026: 18% are 1 or 2 stars. Open a theme to read what people wrote.

WHAT THEY COMPLAIN ABOUT · SHARE OF BAD REVIEWS
Limits, credits, locked features19%

9 of the 1 and 2 star reviews.

★★★★★ I bought the subscription but didn't get any contents , almost everything is locked
★★★★★ Locked most of the things
★★★★★ 90% of the app is locked!
Price and subscription13%

6 of the 1 and 2 star reviews.

★★★★★ The only free component is just a small part and doesn't include important opening, while the rest are paid and quite expensive too!
★★★★★ I bought the subscription but didn't get any contents , almost everything is locked
★★★★★ Asks to pay money for most of the content
WHAT THEY ASK FOR
  • Need more openings in app like London System etc which are missing.. 4★, May 20, 2021
  • Please add button for us to decide when to go to 'Next' Task or 'Continue'. 5★, Mar 22, 2020
  • actually I enjoy your chess app, but can you make chess tactics for Ruy Lopez like chess tactics for Sicilian defense.. 5★, Jan 13, 2020
  • Add a "CONTINUE" button for 5 stars, ( which is included on the pro version. 4★, Nov 12, 2019
  • Pay to play, should have made that more clear 2★, Dec 21, 2017
  • I wish there was an option of searching for an opening position. 5★, Jan 31, 2017
  • Just needs a search function, ideally with ECO codes 4★, Jan 13, 2017
WORDS THAT KEEP COMING UP IN BAD REVIEWS

Nothing stands out.

WHAT THEY LOVE · SHARE OF GOOD REVIEWS
Useful, it helps4%

9 of the 4 and 5 star reviews.

★★★★★ helps advancing your game
★★★★★ This is very useful for "ordinary" players like myself who want to avoid immediate embarrassments in opening the game and to try out new openings.
★★★★★ It's a very good aap it is not only useful to leaners but also for the best players
Fun, addictive3%

6 of the 4 and 5 star reviews.

★★★★★ I am enjoying the training.
★★★★★ I have enjoyed using this application.
★★★★★ actually I enjoy your chess app, but can you make chess tactics for Ruy Lopez like chess tactics for Sicilian defense..
Easy to use2%

5 of the 4 and 5 star reviews.

★★★★★ It really makes chess easy to understand.
★★★★★ Easy to use and takes less space.
★★★★★ Very instructive and easy to use.
Looks great1%

3 of the 4 and 5 star reviews.

★★★★★ So many practice positions with easy to use interface
★★★★★ The only downsides are that the theory is quite dense and dryly presented, and the interface is a bit confusing and intimidating at first.
Worth the money1%

2 of the 4 and 5 star reviews.

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, Japan Google Play.

★★★★★Sep 15, 2026

Good game to practice openings

★★★★★Aug 23, 2026

nice

★★★★★Jun 1, 2026

this is good app for chess prepration

★★★★★Mar 7, 2026

helps advancing your game

★★★★★Aug 13, 2025

great!!🤗

★★★★★Aug 5, 2025

excellent app for learning chess

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.

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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 or short description.

defense18opening8game8gambit8indian defense8chess6program6players5moves5course5indian5openings4opening manual3key moves3chess king3moves board3knights game3defense queen3theoretical3king3learn3tasks3solve3lessons3

What's new in 5.8.2

* Added Czech and Korean translations * Show solved puzzles count on the home screen * Show separate theory/practice/animation buttons for the courses contents to allow direct access * Show best and worst subtopics on the statistics screen * Increased board size in the landscape mode * Feel free to share your experience via the feedback! * Various fixes and improvements

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 (https://learn.chessking.com/), which is an unprecedented chess teaching method. In the series are included courses in tactics, strategy, openings, middlegame, 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 ♔ You can link the app to a free Chess King account and solve one course from several devices on Android, iOS and Web at the same time The course includes a free part, in which you can test the program. Lessons offered in the free version are 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 13. English opening 14. Evans gambit 15. Four knights' game 16. 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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