Start building from what you already play in your online games. Go deeper in the openings you actually enjoy playing.
Theoria's unique visual repertoire explorer is beautifully intuitive. See your game plan and all its possibilities.
Master every move of your repertoire quickly and efficiently using our custom spaced repetition algorithm.
Test Theoria while it's still in development and get 50% off Theoria Pro!
Claim Your OfferTheoria is developed by chess lovers, for chess lovers. Inspired by the demands and challenges of modern opening preparation, we aim to provide a comprehensive tool for opening study.
We understand how daunting it can feel to start learning opening theory. Many beginner, intermediate, and even advanced players don't know where to start, let alone how to practice. Theoria is here for you, no matter what level you're at. We're delighted to show you how easy it can be to grow your knowledge!
Yes! Theoria will always be free to use and free of ads. Theoria Pro is offered as a one-time purchase or subscription; allowing deeper, larger repertoires for the most devoted players.
Absolutely. Provided with your online chess username, Theoria intelligently analyzes your games and determines which openings you already play, so you don't have to start from scratch.
Don't worry! If you're a beginner, or just want a fresh start, Theoria offers curated repertoires to fit any playstyle. These expert-designed plans include detailed notes to help you understand the ideas behind the moves, and succeed at any level.
Theoria is in open beta, so you can start right now! Expect the full public release for iOS and Android in Q2 2026.
