Chess Opener Lite

The Chess Opener app is a comprehensive tool for chess players of all levels. It offers a variety of features to help players improve their game, including a chess opening tree with game statistics, the Encyclopedia of Chess Openings (ECO), and the ability to compare ECO and opening tree moves side by side in any position. The app also allows users to export chess openings in PGN format, build their own opening repertoire, and add or edit comments on moves.

One of the unique features of Chess Opener is its ability to automatically classify any sequence of moves using the ECO system. This makes it easier for players to navigate and understand different openings. The app also includes a chess opening explorer that highlights moves already in the user's repertoire, making it easier to track and analyze their progress.

The app also offers an interactive trainer to help users memorize their chess openings and variations. This trainer allows users to train multiple variations at once against random opponent moves from their repertoire. Users can also set up a starting position for training and track their progress over time.

Chess Opener also offers customization options, allowing users to customize the chessboard colors and pieces to their preference. The app also supports dark mode, making it easier to use in low light conditions. Additionally, the app works completely offline, making it convenient for players to use on the go.

For those looking for even more features, there is an option to upgrade to Chess Opener PRO. This unlocks unlimited repertoire size and depth, a 6x larger opening tree with game statistics, a database of top 100+ grandmasters' repertoires, and powerful chess engine analysis. Users can also import openings in PGN format, making it easy to add their own unique openings to their repertoire.

In summary, Chess Opener is a comprehensive and user-friendly app that offers a variety of features to help chess players improve their game. From its opening tree and ECO system to its training and customization options, this app has something for players of all levels. And for those looking for even more advanced features, the PRO version offers an even more extensive range of tools and resources.