PGN Trainer vs OpeningBook

As an adult improver who reached a 2100+ rating in my 50s, I founded PGN Trainer to solve my own problem: I needed a better way to truly master my openings without relying on expensive, proprietary courses. By building and training my custom repertoire with these exact tools, I shattered my plateau and raised my rating by over 300 points. Whether you are a young club player crafting your first set of openings or a veteran organizing deep theoretical preparation, this is the all-in-one tool designed to help you do the exact same thing. BUILD & ORGANIZE YOUR LIBRARY • Create Your Way: Import your own PGN files, analyze and build a repertoire from the ground up, or download from our rich built-in library of effective, popular openings. • Tailored to You: Find downloadable studies that perfectly match your playing level (Intermediate, Advanced, or Master) and your personal style (whether you prefer Dominating attacks or Solid/Defensive setups). • Total Control: Reorganize your library effortlessly. Separate files, merge repertoires together, or edit and expand your lines directly using deep engine analysis. ADVANCED SEARCH & DISCOVERY • Find Any Line: Search your entire library by specific move sequences, official ECO names (e.g., "Sicilian"), or ECO numbers (e.g., "B90"). • Spotty Search: Use wildcard "spotty" moves to skip moves in your search and easily find transpositions. • Position Matching: Instantly search your custom repertoire for matching positions while you are analyzing your actual, real-world games. STUDY, TRAIN, AND ANALYZE • Three Seamless Modes: Effortlessly surf between Studying the theory, Training your memory, and Analyzing with the engine—all in one fluid experience to enhance your learning. • Spaced Repetition: Train your customized lines using smart spaced repetitions, ensuring you focus your time exactly on the variations you struggle to remember. • Active Learning: Play your prepared responses directly against the engine so you are fully prepared when you sit down at the board. GENEROUS FREE TIER & CLOUD SYNC • Truly Free for Most Players: Enjoy access to intermediate libraries, full study modes, and active training completely for free. We only require a premium upgrade for massive, master-level studies containing more than 2,000 total moves. • iCloud Sync: Your complete opening library syncs automatically across your iPhone, iPad, and Mac. Build a study on your Mac, and train it on your iPhone during your commute! Stop renting your chess knowledge. Build your ultimate repertoire, train your exact lines, and step up to the board with total confidence. Download PGN Trainer today! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://chesspgntrainer.smartworldinnovations.com/privacy-policy

OpeningBook is a clean, offline reference and trainer for chess openings. BROWSE EVERYTHING • Thousands of named openings and variations, organized by ECO volume (A–E), family, and line — sourced from the open Lichess openings database. • Step through any line move-by-move on a real, playable board. • Read key ideas and classic traps for the major openings. SEARCH & FILTER • Find any opening by name, ECO code, or move sequence. • Filter by line length with a simple move-count slider. TRAIN YOUR REPERTOIRE • Add lines to your training set as White or Black. • Drill them in a play-your-side-vs-app loop. • Spaced repetition brings each line back for review at the right time. 100% offline. No account, no ads, no tracking.