Dynamic Repertoires
Branch-aware repertoire with spaced repetition tuned to your memory curve.
Opening trainer
Master the Opening
Build, drill, and own a repertoire that survives real games. Deep analysis, precise lines, and strategic illumination.
The Arsenal
Everything you need to out-prepare your opponents, housed in a meticulously crafted environment.
Tactical Vision
Pattern recognition tailored to your openings with puzzles drawn from your own structures.
Cloud Engine
Remote engine analysis uncovers the truth of complex middle-games instantly.
12M+Positions Analyzed
2,400+Grandmaster Games
98%Recall Rate Improved
Train Anywhere,
Master Everywhere
Your repertoires and spaced repetition progress sync instantly across all your devices. Start on desktop and review on your phone during your commute.
Web Platform
iOS & Android
Spaced drilling
Weakness-first drills, not shuffle-first.
Platform sync
Pulls games from chess.com and lichess automatically.
Engine-aware
Your lines checked against a real engine.
Stay in flow
Board, moves, and notes stay visible while you train.