Random
Lines shuffled randomly. Perfect for testing true recall and simulating real game pressure.
Test Recall
Works Offline
Master Your Opening Repertoire
Import a PGN and train against every line in it. The app quizzes you move by move, tracks what you've locked in, and shows you exactly where you keep slipping.
3 Training Modes
Free No Account Needed
Free, no account
Import, train, and track everything without signing up or paying a cent. It all runs on your device and works fully offline — on the train, on a plane, anywhere with no signal.
Sync, if you want it
$3/moThe one thing we charge for. Sign in to back up your repertoire to the cloud and train across every device you own. Cancel anytime.
Training Modes
Three ways to train
Choose the training style that matches your goals. Test recall, build systematically, or focus on weak spots.
Structured
Lines grouped by variation. Ideal for learning new openings or reinforcing structure.
Learn Systematically
Priority
Lines you haven't trained yet first, then your weakest. Adapts as you practice.
Target Weaknesses
Repertoire Mastery
Where your 48 lines stand
46% mastered
22 Mastered
14 Learning
7 Shaky
5 Unseen
Training Consistency
Last 13 weeks
9 day streak
After every session
Know what to drill next
The app keeps score so you don't have to guess. It tracks which lines you actually know, which ones you keep botching, and whether you're showing up.
Repertoire mastery Every line sorted: mastered, learning, shaky, or unseen
Mistake hotspots The exact positions you keep getting wrong, ranked
Consistency A streak calendar that nudges you to keep the habit
Start with one PGN
Drop in a file and you're training within the minute. No account, no card.
Upload a PGNNew here? See how it works