ChessFlare

ChessFlare is an all-in-one chess opening training workspace built for players who are serious about their preparation. Developed by Bastien Vanhove and launched in 2025, it combines repertoire building, spaced repetition learning, and game analysis into a single integrated platform available on both web and mobile.

The platform uses the SM2 spaced repetition algorithm to schedule your opening line reviews at exactly the right intervals, so lines move from short-term memory into durable reflexes. You can import PGNs from any source, organize variations in a clear move-tree view with Stockfish analysis, and sync games directly from Chess.com or Lichess to identify where your preparation breaks down in real games.

ChessFlare is designed for club players, online players, and coaches who want more structure than a static PGN viewer but less complexity than a full-blown database tool. The free plan covers the essentials. Pro plans start at $44.99 per year or $110 as a one-time lifetime purchase. The mobile app (iOS) syncs in real time with the web version, so you can review lines on the go and edit deeply at your desk.