Everything you need
Built for competitive programmers who take practice seriously.
Track Everything
Keep every problem, note, confidence score, and revision flag in one place.
Analyze with AI
Pull structured summaries, topics, hints, and complexity from OpenRouter-powered analysis.
Database Backed
Persist your archive in Postgres so your data survives refreshes, restarts, and deployments.
See the Patterns
Spot topic bias, confidence trends, and platform distribution with live charts.