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Encyclopedia Chess Informant 1

Chess King · Board · United States store
NOT IN TOP 100 HERE
View on Google Play ↗ Instagram card App Store version →
Revenue a month, worldwide EST
$343
Likely $114 to $1K
New ratings
Tracking
Daily counts start building from today
Rating
4.9 of 5
814 ratings in this store
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
$4.1K
1.1 new ratings a month on average since launch
LIFETIME INSTALLS (GOOGLE)
87.8K
About 786 per month on average since launch
WHERE ITS USERS ARE · SHARE OF RATINGS
  • United States 49 ratings41%
  • Germany 18 ratings15%
  • France 16 ratings13%
  • Netherlands 9 ratings8%
  • United Kingdom 7 ratings6%
  • Italy 7 ratings6%
  • Canada 5 ratings4%
  • Australia 3 ratings3%
HOW SURE ARE WE
Not in any grossing chart, so this comes from ratings growth (1.1 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
814
AVG RATING
4.91
PRICE
Free
IN APP PURCHASES
$17.99 per item
CONTAINS ADS
Yes
LAST UPDATE
153d ago
RELEASED
Jul 6, 2017
CONTENT RATING
Everyone

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
Sep 25, 2026not in a grossing chart
Sep 26, 2026not in a grossing chart
Sep 27, 2026not in a grossing chart
Sep 28, 2026not in a grossing chart
Sep 29, 2026not in a grossing chart
Sep 30, 2026not in a grossing chart
Oct 1, 2026not in a grossing chart
Oct 2, 2026not in a grossing chart
Oct 3, 2026not in a grossing chart
Oct 4, 2026not in a grossing chart
Oct 5, 2026not in a grossing chart
Oct 6, 2026not in a grossing chart
Oct 7, 2026not in a grossing chart
Oct 8, 2026not in a grossing chart
Oct 9, 2026not in a grossing chart
Oct 10, 2026not in a grossing chart
Oct 11, 2026not in a grossing chart
Oct 12, 2026not in a grossing chart
Oct 13, 2026not in a grossing chart
Oct 14, 2026not in a grossing chart
Oct 15, 2026not in a grossing chart
Oct 16, 2026not in a grossing chart
Oct 17, 2026not in a grossing chart
Oct 18, 2026not in a grossing chart
Oct 19, 2026not in a grossing chart
Oct 20, 2026not in a grossing chart
Oct 21, 2026not in a grossing chart
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
$17.99 per item
Google Play only shows the price range per item.
REVIEW MOMENTUM
0.1 reviews / week
  • Trendfalling
  • Recent reviews average4.7 stars
  • Recent 1 and 2 star share4%
From the latest 70 written reviews, covering 3359 days.
RATING BREAKDOWN
813 ratings
5★91%
4★9%
3★0%
2★0%
1★0%

What users want

From the latest 70 reviews on the United States Google Play, Aug 11, 2017 to Nov 1, 2025: 4% are 1 or 2 stars. Open a theme to read what people wrote.

WHAT THEY COMPLAIN ABOUT · SHARE OF BAD REVIEWS

Only 3 of the latest 70 reviews are 1 or 2 stars, too few to find patterns. Users are mostly happy.

WHAT THEY ASK FOR
  • Need more theory to understand motifs 5★, Dec 4, 2019
WORDS THAT KEEP COMING UP IN BAD REVIEWS

Nothing stands out.

WHAT THEY LOVE · SHARE OF GOOD REVIEWS
Useful, it helps9%

6 of the 4 and 5 star reviews.

★★★★★ And it's truly useful and practical
★★★★★ Oh, its really helpful to learn and see things through in an indepth manner👍
★★★★★ Very nice puzzle of chess it helps to improve the chess
Easy to use3%

2 of the 4 and 5 star reviews.

★★★★★ Good tough app even the easy ones are challenging.
★★★★★ Easy to improve your tactic, better than the books

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 Google Play.

★★★★★Nov 1, 2025

it was the best

★★★★★Oct 9, 2025

This is the best application for tactics that I've ever seen. And it's truly useful and practical

★★★★★Sep 29, 2025

very nice

★★★★★Aug 2, 2024

nice nice nice app

★★★★★Jul 13, 2024

Best tactics app for a higher intermediate player like me

★★★★★Jul 3, 2024

Good App

Store screenshots

ScreenshotScreenshot

App Store ads

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

Apple's ad repository couldn't be reached right now. Try again later.

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.

chess8program6learn4course4moves4chess king3moves board3elo3tasks3solve3lessons3test3application3combinations2vol2player2based2contains2basic2tactics2internet2series2king2levels2

What's new in 5.7.5

* Added Czech and Korean translations * 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

Encyclopedia of Chess Combinations vol. 1 (ECC vol. 1) is the ultimate educational tool with systematic, carefully selected content for player with ELO 2000. The material is based on the latest edition of the eponymous bestselling book released by Chess Informant. This volume contains chess combination of Basic Level (ELO 2000) for solving, all hand-picked and sorted by theme to provide the most exciting and efficient training experience possible! Unlike disorganized, basic tactics you can learn all over the Internet, this Chess Sphinx will challenge you consistently and systematically, unveiling new intricacies right when you decide you have mastered that particular tactic. 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. Annihilation of defence 2. Blockade 3. Clearance 4. Deflection 5. Discovered attack 6. Pinning 7. Demolition of pawn structure 8. Decoy 9. Interference 10. Double attack

See this store page in another country

Prices, ranks and reviews are per country. Revenue above is already worldwide.

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