Most chess apps give you one game review a day, then generic tips. Quackmate is a coach that reads all your games. Type your Chess.com or Lichess username — no password, no uploads, no signup. In 10 seconds: your style, your leaks, the openings that suit you, what pressure does to you. Then it coaches. A weekly plan, puzzles built from mistakes you actually made, and every game's turning point explained. Each claim taps through to the exact move in your own game.