USD 8.99Version 1.25.1Sun Jan 25 2026
NEW Chess engine!
- Faster loading time
- Faster chess analysis
- Configurable CPU usage and analysis time
- Engine moves are highlighted on the chessboard
- Engine settings are now accessible from the menu bellow the engine moves
Features:
- Chess opening tree with game statistics
- The Encyclopedia of Chess Openings (ECO)
- Database of top 100+ grandmastersโ repertoires
- Stockfish chess engine analysis
- Compare ECO, opening tree and engine moves side by side in any position
- Import and export chess openings in PGN format
- Build your own opening repertoire
- Add or edit comments on moves
- Automatically classify any sequence of moves using the ECO system
- Chess opening explorer highlights moves already in your repertoire
- Chess database includes all transpositions
- Interactive trainer to memorize your chess openings and variations
- Train multiple variations at once against random opponent moves from your repertoire
- Set up a starting position for training
- Track your training progress
- Customize chessboard colors and chess pieces
- Supports dark mode
- No ads
- Works completely offline
CHESS OPENING EXPLORER
Search in the Encyclopedia of Chess Openings, browse the chess opening tree, explore the opening repertoires of famous chess grandmasters, or ask the chess engine to find the best moves. Swipe left or right to switch between the exploration features in any position.
BUILD YOUR OPENING REPERTOIRE
Add your favorite opening lines to your repertoire using the chess opening explorer or import your openings in PGN format from other chess programs. You can always edit the names of your openings and organize them in your repertoire.
OPENING TRAINER
A simple and efficient method to memorize variations of openings in your repertoire. You can train either whiteโs moves or blackโs moves only or both. Optionally, you can train all variations at once. The trainer chooses the opponentโs moves randomly from your opening repertoire. Chess Opener tracks your progress and shows your stats.
Requires iOSย 15.1 or later. Compatible with iPhone, iPad, and iPodย touch.
















Chess Opener Pro is a thoughtfully designed mobile game that blends accessible mechanics with steadily increasing challenge. Players place and manipulate objects to influence in-game elements, solve levels, and progress through curated stages. The experience favors experimentation and polish, with simple controls and satisfying feedback.
No additional information available.