Hermis Labs

Voice interview coach for product managers

Practice out loud with a coach who listens first.

Talk through realistic product interviews built from your own experience. Your coach adapts each question to what you actually said, then shows you one clear thing to try next.

Early access. Mock interviews that adapt, and feedback grounded in your words, work today. Answering out loud is in beta — see exactly what works.

Beta

What a session sounds like

A spoken conversation, one question at a time. Your coach listens for the decisions behind your answer — the part interviewers most want to hear — and changes course based on what you say.

  • Live captions of every word you said
  • Pause, skip or take a moment whenever you need
  • Each follow-up shows why it was asked

Illustrative example — not a real candidate.

Illustration of a voice practice session: the candidate's spoken answer appears as a caption, and the coach asks a follow-up about it.

Illustration of voice practice, now in beta

Coach mode Question 2 of 4 · Metrics 18:42
  1. YouWe redesigned onboarding and engagement went up a lot.
  2. Coach · follow-upWhat did you measure, and what did you compare it against?

Why this follow-upYou named a result, but not the metric or the baseline.

A practice loop, not a question list

Modeled on what good interview coaches do: start from your real story, listen closely, and give feedback you can act on tomorrow.

  1. Your story

    Add a resume or a few sentences. Every detail shows the words it came from.

  2. Your target

    Pick a level and role, or paste a job description. See why each skill is in your plan.

  3. Listen & adapt

    One question at a time. Thin answers get the follow-up a good interviewer would ask.

  4. One next step

    Feedback quotes your words and ends with one thing to practice — then retry it.

What makes it different

Interview practice works when someone listens and pushes on the part that matters.

Live

It adapts to what you say

Follow-ups come from your own words: the decision, the trade-off, the metric you left out.

Beta

You practice out loud

Real interviews are spoken. Saying it is the skill you're building.

Live

Built from your real story

Plans fit your level and target, from the profile you confirm.

Live

Feedback you can check

Every point quotes your words and ends with one thing to try next. No score.

Beta

See how you come across

Pace and pauses, plus opt-in estimates of voice tone, eye contact and expression — for your practice only, never to judge you.

Live

Help on your terms

Hints when you ask in Coach mode; silence in Simulation, like the real thing.

Feedback that points at your words

Each point separates what was said, why it matters, and what to try. Nothing is invented about you.

“Engagement went up a lot.”
Noticed

The result has no metric, baseline or time frame.

Matters

An interviewer can't tell whether the change worked.

Try next

Retry it, naming the metric you watched and how you knew it moved.

Illustrative feedback on the example above.

Private by default

A practice space you control — never a screening tool.

How your data is handled
  • Your words only. No credit for things you didn't say.
  • Delete anything. A document, a session, or your whole account.
  • No hidden lookups. A LinkedIn link you save stays text.
  • No trackers. No ads or analytics on this site.

What works today

We're early, and we'd rather tell you exactly where things stand.

Questions you might have

Is this used by employers to screen candidates?

No. It's a preparation tool you control. Nothing you practice is shared with anyone, and it isn't meant for use during a real interview.

Can it tell me whether I'll get the offer?

No one honestly can. Your coach helps you tell your real story clearly and shows how a specific answer improves with practice. It won't give you a hiring score.

Are the questions real questions from companies?

No — they're original practice questions written for each level. When you add a company or job description, your plan reflects it, but we never claim to know what a company asks.

Which AI does it use?

Anthropic's Claude reads your documents (with contact details hidden first) and runs practice sessions. When you answer out loud, AssemblyAI turns your speech into text and OpenAI voices the coach — only with your consent. How your data is handled.

Start with what you've already done

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Start practicing