TuneChess - Build, analyze, and train your chess opening repertoire

Hey Product Hunt! We built TuneChess because memorizing an opening repertoire is easy to start and hard to keep. Most players build a repertoire once, then watch it decay because there's no structured way to keep drilling it. TuneChess lets you build White and Black repertoires with engine analysis and Opening Book/Explorer stats, then trains the exact lines you added using spaced repetition — not generic puzzles. You can import PGNs or Lichess studies, review your own games, and sync everything across devices. We'd love your feedback, especially on the training flow — that's the part we care most about getting right.