Chess Openings Trainer Pro

1.09K reviews
Content rating
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About this game

Pro-version advantages:
✔ 100% ad-free and offline.
✔ One time purchase.
✔ Unlimited games.
✔ Get full power from chess engine.
✔ PGN: import up to 40 moves.
✔ Export to PGN format.
✔ Restore your database.

In chess, a winning game starts with the very first move. It doesn't matter how creative you may be in the middle game or endgame if you lose the opening. Your goal while playing the opening is to reach a familiar and comfortable position.

This app will help you define a complete chess opening plan and will train you to execute it. It will also allow you to define mid-games or end games if you also want to train on these aspects of the game. The app uses an proven memorizing technique called "spaced repetition" which is probably be the most powerful technique in existence for improving your brain's ability to recall what you study. It continuously identifies moves that give you more challenge and helps you to improve by using an effective pattern of repetitions. The perfect execution of the plan you have prepared will give you an advantage against any opponent, even more so when it comes to timed games.

The concept is very simple: you select and enter only one move for your own color (your best move) and then you enter all possible opponent's moves in response to your move.

A quick reference guide is available here:

Main features:
♞ Ability to practice various topics: openings, mid-games or end-games.
♞ Ability to create folders and segregate games in an organized way.
♞ Ability to import PGN files (moves and comments).
♞ Ability to export your games to PGN file format.
♞ Ability to add personal comments in your games.
♞ Ability to read aloud comments using your device's text to speech engine.
♞ Ability to add graphic elements (arrows and colored squares) to illustrate the tactical points when editing a game (by a long press on a tile of the chessboard).
♞ Compatible with ChessBase graphic commentary.
♞ Ability to re-order candidate moves in your games (by a long press in the moves' list).
♞ Ability to resume playing against the chess engine when you reach the last position of a game.
♞ Ability to backup your repertoire, restore it on another device, or share it with your friends.
♞ Automatic identification of your openings using the Encyclopedia of Chess Openings (ECO).
♞ Automatic calculation and display of material difference.
♞ Ability to handle transpositions.
♞ Ability to customize app theme, chessboard colors and chess pieces set.
Dark theme
♞ A built-in chess engine (Stockfish) helps you to find the best moves for your games!

Several operating modes are available for regular training:
♞ target weaknesses (default):
The computer simulates opponent moves based on your scores and targets your weaknesses.
♞ full coverage:
The computer simulates opponent moves sequentially and ensures to cover all possible paths of your game.
♞ random mode:
The computer simulates opponent moves based on the probability of occurrence of each move during a game.

"Spaced repetition" type training (flash cards):
♞ The computer select random positions within your game using a custom learning algorithm.

When opening the app for the first time, the first step is to create a new game and record the moves your want to learn.
Once you are done with entering moves you are ready to start your training.

Please rate this app. By awarding it 5 stars, you contribute to the promotion of new installations and thus allow the allocation of resources to maintain and improve the application.
Updated on
Aug 31, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

923 reviews
A Google user
April 18, 2020
The idea is great and it works pretty good. One thing that could be better would be not having to name your opening before you go over it as sometimes one doesn't really know, in fact that's one of the things I like to learn is the specific name and variation so that I have a visual guide to remembrance. On that note, also, I wish the machine was was more detail oriented when naming the opening being played through analyzes. But these are small details that can be improved. Over all a great App!
15 people found this review helpful
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April 19, 2020
Thanks for your feedback! Please note that you can rename the opening later on if you want.
Jeff Berkey
November 9, 2022
This is a great app. I highly recommend. Some needed improvements: 1. I wish there was a way to paste PGN from clipboard. 2. It would be extremely helpful to be able to branch my own moves into other ideas, rather than only getting one best move per position. 3. For players looking to practice deep lines, it needs a button in the Editor view that takes you to the practice mode but for practice on the line you were on when you clicked the button. This is the biggest thing missing from this app.
6 people found this review helpful
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June 3, 2023
Thank you for downloading our app! We will keep working on it!
A Google user
November 25, 2018
Edit: Support responded to my issue very promptly and released an update that fixed it within hours. This is now a 5 star app for me. I like it, but I'm unable to backup due to FileNotFoundException. I used a file manager to manually create the location but unfortunately that did not work either. In any case I think it should be possible to choose the export location like you can do with restore location. As long as I can't backup I'm reluctant to use the app as I might lose all my data if my phone dies.
4 people found this review helpful
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What's new

♞ Minor bug fixes.