Chess Opener PRO vs Nimzo

Features: - Chess opening tree with game statistics - The Encyclopedia of Chess Openings (ECO) - Database of top 100+ grandmasters’ 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 white’s moves or black’s moves only or both. Optionally, you can train all variations at once. The trainer chooses the opponent’s moves randomly from your opening repertoire. Chess Opener tracks your progress and shows your stats.

Are chess openings holding back your progress? Ever study an opening—only to forget it when you're at the board? Nimzo uses a smart flashcard system that shows you opening lines exactly when you're about to forget them. By reviewing at the right moment, you build lasting memory so your preparation actually sticks when it matters most. Instead of passively reading theory, you actively recall moves and variations through spaced repetition — the proven method for long-term retention. Over time, Nimzo learns what you know and what you don't, keeping your repertoire sharp without wasting time on lines you've already mastered. With Nimzo you can (subscription required): - Study opening lines through a smart flashcard review system - Build and maintain a personal opening repertoire over time - Memorize main lines and variations so they stick at the board - Earn XP for study activity and track your progress over time - Create your own decks or study decks shared by the community Whether you're preparing a full repertoire or picking up a new opening for the first time, Nimzo makes sure you never forget your preparation when it counts. --- SUBSCRIPTION INFORMATION Access to Nimzo requires a subscription. Please be aware of the following: - Payment will be charged to your Apple ID account at confirmation of purchase - Subscription automatically renews unless auto-renewal is turned off at least 24 hours before the end of the current period - Your account will be charged for renewal within 24 hours prior to the end of the current period at the cost of the chosen subscription plan - Subscriptions may be managed by the user and auto-renewal may be turned off by going to Account Settings after purchase - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription, where applicable --- Terms of Use: https://nimzochess.com/termsofuse Privacy Policy: https://nimzochess.com/privacypolicy Terms & Conditions: https://nimzochess.com/termsandconditions