OfferCC is a real-time AI interview assistant for macOS and Windows, not a mock-interview platform. During live interviews, it uses spoken questions, resume and target-job context, and the ongoing conversation to suggest responses to behavioral, technical and system-design questions. For coding questions, users can capture a screenshot and click Solve for an approach, code and complexity analysis. Check the official website for desktop setup, permissions and current paid plans. Follow the interview organizer's rules on AI assistance.