Public Beta
Master System Design
With Real-Time AI Feedback
Stop practicing on static docs. Drill with an AI interviewer that watches your diagram, challenges your trade-offs, and grades your performance instantly.
Live Diagram Analysis
The AI sees what you draw on the whiteboard in real-time. It interrupts if your load balancer connects to the wrong service or if your shard key makes no sense.
Voice-First Roleplay
Just speak. The AI acts as a senior interviewer, pushing back on your assumptions about latency, consistency, and CAP theorem trade-offs.
Instant Scorecards
Get a detailed report after every session. See your transcript, weak points, and a numerical score to track your readiness for the L5/L6 loop.
Early Access
$0 / month
We are currently in open beta. Get full access to all interview topics and unlimited sessions.
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