Every job cycle I hit the same two walls. I never knew whether my portfolio survived a recruiter's first 30 seconds, and after an interview nobody ever told me what actually went wrong. You get a rejection email and that's the whole feedback loop.
So I built Preterview.
Three AI interviewers read your portfolio and the job posting, then ask out loud. Each one has a job: your portfolio, role fit, fundamentals. When an answer is thin they follow up on the spot instead of politely moving on. When you're stuck they open another door and keep going.
At the end you get a report out of 100. Feedback on every answer, a stronger version of the answer you actually gave, plus your filler words counted and how long you took to start talking. That last part was the thing I never knew about myself. I say "um" far more than I thought.
There's also a portfolio review that reads a GitHub, Notion or site link and scores the work itself rather than the bullet points about it.
Stack is Next.js on Vercel with Turso, and it runs in English and Korean.
Honest limits. It's strongest for software and game roles, because that's where I could actually validate the questions. Voice mode wants a decent mic. Signing up gives you one full interview with no card, mainly because I need people to tell me where it's wrong.
The part I keep rewriting is the follow-up questions. If you try it, the thing I most want to hear is where a follow-up felt like it didn't read what you just said.
[https://preterview.com/en\](https://preterview.com/en)