Comparison

Chess Endgame Studies vs Openings Mastermind

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

Head to head
About

Chess Endgame Studies

Master chess endgames with a curated collection of instructive studies and exercises. This app provides hints, explanations, and feedback to help you improve tactical skills and consolidate knowledge.

Highlights
  • 950+ endgame compositions
  • 900+ subsidiary exercises
  • Unique 5x5 mini-position hints
  • Interactive coach with hints and explanations
  • Refutation of common mistakes
  • Play positions against the computer
  • Tracks ELO rating changes
Features
Read full description

This training course is a special subset of famous CT-ART 4.0 course, based on best chess studies, especially chosen for their instructive value. There is simply no substitute for the ease and quality of the studies presented, not to mention their eternal beauty. Endgame Studies includes about 950 greatest endgame compositions and 900 subsidiary exercises. Each position comes with a special hint unique to this course – a 5x5 mini-position designed to convey the very essence of the tactical maneuver used in the main example. 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 • 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. Chess Tactics Art for Advanced 1.1. Attacking the king 1.2. Stalemate 1.3. Pawn promotion 1.4. Domination 1.5. Positional fortresses and their destruction 1.6. Draws by perpetual check or by repetition 1.7. Other ideas and conjunction of ideas 2. Gallery of Chess Composers 2.1. Kubbel 2.2. Kasparyan 2.3. Troitzky 2.4. Rinck 2.5. Platov M. and V. 2.6. Nadareishvili 2.7. Prokesh 2.8. Chekhover 2.9. Grigoryev 2.10. Mattison 2.11. Pogosyants 2.12. Seleznyov 2.13. Kaminer 2.14. Gurvich 2.15. Reti 2.16. Duras 3. Difficulty 3.1. Studies with difficulty level 100 3.2. Studies with difficulty level 110 3.3. Studies with difficulty level 120 3.4. Studies with difficulty level 130 3.5. Studies with difficulty level 140 3.6. Studies with difficulty level 150 3.7. Studies with difficulty level 160 3.8. Studies with difficulty level 180

About

Openings Mastermind

Master chess openings with this app. Import studies, explore with advanced engines, and practice specific lines through repetition. Track your progress and improve your game.

Highlights
  • Import Lichess Studies or PGNs
  • Explore openings with Stockfish 15
  • Practice openings by repetition
  • Smart practice queue
  • Track learning progress
Features
Read full description

Get ready to take your chess game to the next level with Openings Mastermind, the ultimate chess opening app! Some of the features include: - Import Lichess Studies or custom PGNs - Explore openings with Stockfish 17 and the Lichess position database - Practice openings by repetition against your own custom openings database - Take advantage of the smart practice queue and improve your learning - Observe your learning progress in different openings With our app, you can take your opening game to the next level by practicing against the specific lines you want to master. Whether you're a beginner or an experienced player, our app is the perfect tool to help you improve your opening moves and become a better chess player. Planned Features: - Continue against engine, after study line ends - Analysis of your games from Lichess and Chess.com compared to your openings database

Screenshots

Chess Endgame Studies4 screens
Openings Mastermind4 screens

Verdict

The call

The clearest difference is review sentiment: Chess Endgame Studies at 93% against Openings Mastermind's 50%. Chess Endgame Studies also leads on rating (4.8 vs 4.3) and ratings volume (117 vs 6). Openings Mastermind's advantage is in-app purchases (none vs 1) and update cadence (fortnightly vs every 2 months). On price, ads and device support 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 Endgame Studies sells 1 one-off in-app purchase. Openings Mastermind asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Chess Endgame Studies holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: Chess Endgame Studies has 117 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 93% of Chess Endgame Studies's written reviews are positive against 50% of Openings Mastermind's.

UpkeepUpdate frequency

Chess Endgame Studies ships an update every 2 months, Openings Mastermind fortnightly. The most recent releases landed on October 19, 2026 and October 7, 2026 respectively.

Scorecard7 real differences · 3 level
Chess Endgame Studies versus Openings Mastermind: the parameters behind the verdict, then further details
ParameterChess Endgame StudiesOpenings Mastermind
PriceFreeFree
Rating4.8 (117 ratings) — better4.3 (6 ratings)
Positive reviews93.3% of reviews — better50.0% of reviews
Number of ratings117 — better6
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS8.0 — better18.6
Further details — not scored
Size42 MB88 MB
Age rating4+4+
DeveloperChess KingChristian Heise

Customer experience

Chess Endgame Studies

All ratings117 ratings
Positive95.7%
Neutral2.6%
Negative1.7%
Written reviews15 reviews
Positive93.3%
Neutral0.0%
Negative6.7%

Openings Mastermind

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

1 purchases

Chess Endgame Studies

One-time1
  • Full Course$3.99
None

Openings Mastermind

No in-app purchases

Questions

Is Chess Endgame Studies free?
Chess Endgame Studies is free to download, with in-app purchases available.
Is Openings Mastermind free?
Openings Mastermind is free to download, with no in-app purchases.
Which has better reviews, Chess Endgame Studies or Openings Mastermind?
Chess Endgame Studies is rated higher. Chess Endgame Studies averages 4.8 out of 5 from 117 ratings, while Openings Mastermind averages 4.3 from 6 ratings.
Do Chess Endgame Studies or Openings Mastermind have ads?
Neither Chess Endgame Studies nor Openings Mastermind shows ads.
Which is updated more often, Chess Endgame Studies or Openings Mastermind?
Chess Endgame Studies ships an update every 2 months, and Openings Mastermind fortnightly. Most recently, Chess Endgame Studies was updated on October 19, 2026 and Openings Mastermind on October 7, 2026.

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