Two plans Unlock Unlimited Plus €3.20 / $3.99 Unlimited €5.90 / $6.99 per month Compare

Repertoire builder

Your openings, as live courses you can drill.

Build a course for each system you play. Paste a PGN, or record moves on the board. Practice White or Black from the same tree. Your first course is free; extra courses need Unlock Unlimited.

Sign in to start Unlock Unlimited

Build

Practice the lines you actually play

Play moves on the board. Branch variations the same way you would in a study.

Import

Bring in a PGN

Paste a study from Lichess or Chess.com, or upload a .pgn file. The main line and variations become a course you can drill.

Library

Pick a course, then a color

Every opening sits in your list. Drill the side you play, or flip and train the replies.

Unlimited

One plan for extra courses

Your first course is free. Unlock Plus adds up to 15 of your own courses, Unlock Unlimited up to 60 of your own courses, and every official line we release after Fried Liver.

See it in motion

How a course is built and trained

Make variations Learn variations Practise with both colours

Changelog

What changed

  1. v1.1 Latest

    Evaluation Dashboard, Blunder Override, and Game Review — tools that help you understand your own play.

    • added Evaluation Dashboard: Tracks your ratings across Chess.com and Lichess while analyzing which openings you play most.
    • added Blunder Override: Replays your past games to walk you through the exact moments where you threw away a win.
    • added Game Review Feature: Imports your games or pgn so AI coach can break down your games move by move.
  2. v1.0

    The first build: opening trainer, endgames vault, progress tracking, repertoire builder, community courses, and live puzzles.

    • added Opening Trainer: The opening trainer, with 100+ official starter courses (work in progress).
    • added Endgames Vault: King opposition, Lucena, Philidor, King and rook mate, King and queen mate.
    • added Progress tracking: Tracks your personal learning progress, puzzle ratings, and daily practice streaks.
    • added Repertoire Builder: Lets you build and drill your own custom opening courses as White or Black.
    • added Community Courses: publish a course to share with other players.
    • added Live Puzzles: Features an all-time rating leaderboard that updates in real-time as you solve.