ChessReps

ChessReps is a chess opening training platform built around spaced repetition, the science-backed memorization technique that turns opening lines into automatic recall. Developed by Chessreps, LLC, the platform has grown to over 500,000 active players who use it to build bulletproof repertoires grounded in real game data.

What sets ChessReps apart is its data-driven approach. Rather than drilling obscure grandmaster theory, the app pulls from millions of actual Lichess games to teach you the openings you will actually face at your level. Four distinct training modes keep practice engaging: Learn Mode offers smart hints and explanations, Practice Mode tests pure recall, Drill Mode adds competitive pressure with leaderboards, and Time Trials challenge you to perform under a 60-second clock.

The platform ships with 25+ curated repertoires covering popular systems like the London, Sicilian Defense, and Ruy Lopez, with new ones added weekly. Players can also build custom repertoires by combining lines from multiple sources. A community-driven course library lets users create and share their own opening courses, adding depth beyond the built-in content.

ChessReps is free to start, with a PRO membership ($7.99/month or $49.99/year) unlocking the full library. It is available on iOS, Android, and the web at chessreps.com. Whether you are a club player looking to stop blundering in the opening or a competitive player building a serious repertoire, ChessReps makes the process structured and retention-focused.