Memorize your openings. Never forget a line.
Stop forgetting your openings: the free chess opening trainer
ChessAtlas is a free chess opening trainer: memorize your repertoire with spaced repetition, and catch where your real games deviate from your prep.
- FSRS Spaced Repetition
- Lichess & Chess.com Import
- Curated courses
- Free to start
Italian Game
Giuoco Piano
Starting...
Starting position
Integrates with your favorite platforms
Free to start
No credit card
Secure & private
How It Works
Master your openings in 3 simple steps
- 1
Build Your Repertoire
Import your games or build your own lines.
- 2
Train with FSRS
Spaced repetition brings each line back at the right time.
- 3
Track & Improve
See where you deviate from your preparation.
Everything to improve in openings
Modern tools to learn and remember your opening lines.
What players say
Reviews posted on the App Store and Google Play.
“Best chess opening app I’ve found, and free too”Jsand_11App Store
“Great app/platform! I only wish there were more courses!”Ido ShenhavGoogle Play
“J’aime comprendre en lisant des livres. Structurer mes cours selon ma propre logique et ma compréhension qui évolue : cette application me le permet. Cela et la souplesse et l’efficacité du système de répétition c’est excellent.”AequalisApp Store
“Pratique pour m'entraîner sur mes répertoires !”SandraGoogle Play
Take ChessAtlas with you
Train your openings on iOS and Android, wherever you are.
Train any opening with spaced repetition
Every major chess opening, each with main variations, traps, and an interactive trainer powered by FSRS.
Latest from the blog
Opening guides, training methods, and honest tool comparisons - written for real club players.
Frequently Asked Questions
Everything you need to know about ChessAtlas
Yes! Core features are completely free: build repertoires, train with spaced repetition, and import games from Lichess/Chess.com. Premium features are available for power users who want more.
Spaced repetition is a scientifically-proven learning technique. FSRS (Free Spaced Repetition Scheduler) is a modern algorithm that schedules your reviews at optimal intervals, right before you would forget. This means better retention with less study time.
Absolutely! Import PGN files from any source, or connect your Lichess/Chess.com account to analyze games and build your repertoire from your actual play.
ChessAtlas lets you build YOUR OWN repertoire for free, instead of buying pre-made courses. Plus, we offer game import and deviation analysis, features Chessable doesn't have.
Yes. ChessAtlas has native iOS and Android apps, and the web app works in any browser. Train on your phone during your commute and on the desktop at home: your repertoire and review schedule stay in sync.
Ready to never forget a line again?
Create a free account and start building your repertoire now.