InterviewCopilot is a privacy-first desktop app that helps candidates answer live interview questions with clarity and confidence. It detects each question in under a second and streams résumé- and job-description-aware guidance into a private overlay that stays outside screen shares. The app works alongside Zoom, Google Meet, Microsoft Teams, and Webex without joining the call as a bot. Candidates use InterviewCopilot for behavioral, technical, coding, case, and system-design interviews. Live transcription preserves conversation context, screen analysis turns coding tasks and diagrams into focused guidance, and structured answer building adapts responses to STAR, technical trade-offs, or case frameworks. InterviewCopilot runs on macOS and Windows and offers unlimited use through a monthly or annual subscription.