Comparison

Chess Knowledge vs Chess Opening Tactics Trainer

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Chess Knowledge

Features
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It's time to learn interactive chess courses with activity-based solving! Our courses have hundreds of activities from various learning levels. The different types of interactive activities help you digest the information easily. 1) Explanation Activity: This will teach you a concept in a concise way. 2) Capture Activity: The most fun and engaging way to learn piece movements and captures. 3) Puzzle Activity: Solve interesting puzzles and tactics from a given position. 4) MCQ Activity: Test your knowledge with quiz-based multiple-choice questions. 5) Play with Computer: Train your skills by practicing must-know positions with the computer.

About

Chess Opening Tactics Trainer

Features
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Master chess openings with 50,000+ tactical puzzles โ€” the largest opening-focused puzzle collection available. Sharpen your Sicilian, Queen's Gambit & every opening you play. WHY THIS APP IS DIFFERENT Most chess apps give you random puzzles from random positions. Every puzzle here comes from a real opening โ€” so you train the exact patterns you'll face in your own games. Stop memorizing moves blindly. Start understanding why they work. 50,000+ OPENING PUZZLES The largest collection of opening-focused tactical puzzles, organized by ECO code and adaptive difficulty. Each puzzle is drawn from real grandmaster games. Your ELO rating adjusts automatically so you're always challenged at the right level. OPENING EXPLORER Browse any opening line interactively. See win rates, popular continuations, and grandmaster games for every position. Compare moves, evaluate plans, and build a repertoire that fits your style. PLAY AGAINST STOCKFISH Test your preparation against one of the world's strongest chess engines. Choose from 8 difficulty levels and discover where your openings hold up โ€” and where they break down. PUZZLE SMASH MODE Race the clock. Solve as many opening puzzles as you can before time runs out. Build speed, sharpen pattern recognition, and beat your personal best. DAILY CHALLENGE A fresh set of puzzles every day to keep your skills sharp and build a consistent training habit. Never miss a day of improvement. BUILT FOR SERIOUS IMPROVEMENT โ†’ Adaptive ELO rating that tracks your progress over time โ†’ Smart hint system โ€” nudges without spoiling solutions โ†’ Chess960 (Fischer Random) support โ†’ Detailed move analysis with engine evaluation โ†’ Clean, distraction-free interface for focused training 100% OFFLINE No internet required. Train on the subway, on a plane, or anywhere life takes you. Your chess improvement never stops. FROM BEGINNER TO MASTER Whether you're rated 800 or 2200, the adaptive difficulty system meets you where you are. Start with fundamental opening traps and work your way up to complex grandmaster-level combinations. Turn your openings into your greatest weapon. Privacy Policy: https://dawikk-apps.vercel.app/ChessOpenings/privacyPolicy.html Terms of Use: https://dawikk-apps.vercel.app/ChessOpenings/termsOfUse.html

Screenshots

Chess Knowledge4 screens
Chess Opening Tactics Trainer4 screens

Verdict

The call

The clearest difference is in-app purchases: Chess Knowledge at none against Chess Opening Tactics Trainer's 7. Chess Knowledge also leads on device support (3 vs 1) and iOS requirement (12.0 vs 16.4). On price and update cadence there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Chess Opening Tactics Trainer sells 7 in-app purchases, starting at $2.99 per month. Chess Knowledge asks for nothing beyond the download.

UpkeepUpdate frequency

Chess Knowledge ships an update monthly, Chess Opening Tactics Trainer every 2 months. The most recent releases landed on September 30, 2026 and September 13, 2026 respectively.

Scorecard3 real differences ยท 3 level
Chess Knowledge versus Chess Opening Tactics Trainer: the parameters behind the verdict, then further details
ParameterChess KnowledgeChess Opening Tactics Trainer
PriceFreeFree
Update frequencyMonthly โ€” betterEvery 2 months
Adsโ€”Yes
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone
Requires iOS12.0 โ€” better16.4
Further details โ€” not scored
Size86 MB141 MB
Age rating4+4+
DeveloperChess Knowledge FZEDawid Wrzesinski

In-app purchases

None

Chess Knowledge

No in-app purchases

7 purchases

Chess Opening Tactics Trainer

Subscriptions4
  • Espresso Subscription$2.991 Month
  • Flat White Subscription$5.993 Months
  • Latte Subscription$7.996 Months
Show 1 more
  • Super Large Subscription$12.991 Year
One-time3
  • Espresso$3.99
  • Flat White$6.99
  • Latte$9.99

Questions

Is Chess Knowledge free?
Chess Knowledge is free to download, with no in-app purchases.
Is Chess Opening Tactics Trainer free?
Chess Opening Tactics Trainer is free to download, with in-app purchases available.
Which is updated more often, Chess Knowledge or Chess Opening Tactics Trainer?
Chess Knowledge ships an update monthly, and Chess Opening Tactics Trainer every 2 months. Most recently, Chess Knowledge was updated on September 30, 2026 and Chess Opening Tactics Trainer on September 13, 2026.

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