Encyclopedia 2 by Informant vs GPT Chess
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Encyclopedia 2 by Informant
This educational tool offers systematic chess training with intermediate-level combinations sorted by theme. It provides interactive lessons, hints, and explanations to help players improve their tactical skills and understanding of the game.
- Systematic chess combinations
- Intermediate level training (ELO 2200)
- Themed sorting of tactics
- Interactive theoretical lessons
- Hints and mistake refutations
- Play against computer
- Rating monitoring
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Encyclopedia of Chess Combinations vol. 2 (ECC vol. 2) is the ultimate educational tool with systematic, carefully selected content for player with ELO 2200. The material is based on the latest edition of the eponymous bestselling book released by Chess Informant. This volume contains chess combination of Intermediate Level (ELO 2200) 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, 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. 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
GPT Chess
Engage in chess matches against advanced AI models like ChatGPT and Gemini. Choose between standard rules or a chaotic no-rule mode where AI instructions dictate gameplay. The app features conversational AI during play and offers multiple AI strength levels.
- Play against ChatGPT and Gemini AI
- Standard chess rules mode
- No-rule chess mode with AI instructions
- Multiple AI strength levels
- Conversational AI during gameplay
- Minimalist design
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Play Chess with ChatGPT (OpenAI, GPT 3.5 or GPT 4) or GeminiPro (Google). There are two modes: (A) The standard mode, both you and the AI would follow the standard chess rule, so no illegal move! You can choose between: 1. The native ChatGPT4 API (weakest chess player); 2. Prompt improved GPT4 API (e.g. better chess player); 3. Enhanced backend chess calculation API call with GPT4 (i.e. strongest chess player). (B) The No-Rule chess mode. In this mode, we strictly follow the instruction provided by ChatGPT AI to make the move. Enjoy a chaotic and hilarious chess game. Don't be surprise if AI makes illegal moves, captures its own piece, generates random pieces, and suicides. :) You can choose different LLM AI: 1. GPT 3.5 (OpenAI); 2. GPT 4 (OpenAI); 3. Gemini Pro from Google. A minimalist design, just start to play, that simple. Also, the ChatGPT will talk to you during the play! Come and see if you can beat the ChatGPT in chess! Link to standard Apple Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: http://lwdevstudio.github.io/privacy-info.html
Screenshots
Verdict
The clearest difference is review sentiment: Encyclopedia 2 by Informant at 100% against GPT Chess's 33%. Encyclopedia 2 by Informant also leads on rating (4.9 vs 4.2) and iOS requirement (8.0 vs 16.0). GPT Chess's advantage is update cadence (every 9 days vs every 4 months). On price, ratings volume, ads and in-app purchases 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
Both are free to download. Encyclopedia 2 by Informant sells 1 one-off in-app purchase and GPT Chess sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
Encyclopedia 2 by Informant holds the better App Store score, 4.9 against 4.2. Both are backed by a comparable volume of ratings — 15 and 17 respectively. Written reviews point the same way: 100% of Encyclopedia 2 by Informant's written reviews are positive against 33% of GPT Chess's.
Encyclopedia 2 by Informant ships an update every 4 months, GPT Chess every 9 days. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.
| Parameter | Encyclopedia 2 by Informant | GPT Chess |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (15 ratings) — better | 4.2 (17 ratings) |
| Positive reviews | 100.0% of reviews — better | 33.3% of reviews |
| Number of ratings | 15 | 17 — better |
| Update frequency | Every 4 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 8.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 44 MB | 88 MB |
| Age rating | 4+ | 4+ |
| Developer | Chess King | FusionX Tech LLC |
Customer experience
Encyclopedia 2 by Informant
GPT Chess
In-app purchases
Encyclopedia 2 by Informant
- Full Course$9.99
GPT Chess
- Unlimited APIs3 Days trial$1.991 Month
Questions
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