Reviewers consistently say ZEDX feels less like a scripted bot and more like a tough, fast-moving mock interviewer that challenges weak, vague, or buzzword-heavy answers in real time. They especially value the aggressive follow-up on system design, behavioral, leadership, and resume-based questions, plus detailed post-interview breakdowns and low-latency voice conversation that feels natural under pressure. The main requests are for more customization and practice controls: company-specific modes, gentler warm-ups, targeted drills from weak areas, audio replay, PDF exports, and more niche interview tracks.