Theoria vs Chessable

Chessable sells courses one at a time. Theoria gives you the whole toolkit for free: build a repertoire from your own games, see it as one tree, and train every move with spaced repetition, using lines from any course, book or coach.

At a glance

Chessable’s prices are from its App Store listing, checked November 2026.

Why players choose Theoria

• Free, not per course. Build and train a full repertoire of 600 positions without paying for anything, and without ads.
• Start from the games you’ve already played. Enter your Lichess or Chess.com username and Theoria turns the moves you actually play into a repertoire, with the common replies covered. Try it on your username.
• Everything you play, in one tree. Lines from courses, books, videos, a coach or your own analysis all live in one repertoire you can see at a glance.
• A repertoire that keeps itself honest. Theoria finds missing replies, duplicate moves and loose ends, and reviews your games against what you’ve prepared.
• Endgames included. Step-by-step endgame lessons come with the app.

Already own Chessable courses?

Keep them. Learn an opening from a course, then add the lines you decide to play to Theoria, by hand or from a PGN. Your courses stay the place for explanations; Theoria becomes the one place where everything you play lives and gets trained.