LastRound AI is a real-time interview copilot for candidates in live technical interviews. It listens to the interview, reads the problem shared on your screen, and surfaces answer structure, approach suggestions and clean code as the round happens. It covers data structures and algorithms, system design, live debugging, SQL and STAR-format behavioural questions, and reads LeetCode and HackerRank problems directly off the screen. The desktop app runs as a native overlay on macOS and Windows, staying out of screen shares on Zoom, Google Meet, Microsoft Teams and Webex. Also includes AI mock interviews with voice practice and feedback, an ATS-focused resume builder, and company-specific question banks.