Interview Warmup Review

Google quietly released Interview Warmup back in 2022 and, honestly, most candidates I speak to still have no idea it exists. In twelve years of placing people into roles, I’ve watched candidates spend £200 on interview coaching software when a free Google tool would have got them through the first three reps just as well. Not better. Just well enough.

So let’s talk about when Interview Warmup is worth your time, when it isn’t, and why I still send it to nervous first-time interviewers every single week.

What Interview Warmup actually is

Interview Warmup is a browser-based practice tool built as part of Google’s Career Certificates programme. You pick a field (tech, data, UX, IT support, sales, ecommerce, project management, or a general track), and it fires five spoken questions at you. You answer out loud, the browser transcribes what you said, and you get a breakdown of themes detected in your answer, filler words counted, and words-per-minute pace.

That’s it. No coach avatar. No scoring out of ten. No “you said ‘um’ twelve times, here’s how to fix it” paragraph. Just a transcript with phrases colour-coded into categories like “experiences”, “skills” and “qualities”.

And critically: no login. No email. No Google account prompt. You land on the page, click start, and you’re practising within about thirty seconds. That’s rarer than it sounds.

Why I recommend it to first-time interviewers

The reason I send this tool to candidates on their first or second ever interview isn’t the feedback quality. It’s the format.

Most people rehearse interview answers by reading them silently in their head. This is useless. The gap between “I know what I want to say” and “I can say it out loud, under mild time pressure, without freezing” is the thing that sinks candidates in real interviews. Interview Warmup forces you into that second mode.

The pressure is low enough that nervous candidates will actually do it, no camera judging you, no recruiter listening, no cost if you bail. I’ve had candidates tell me they did ten rounds back to back the night before an interview and walked in noticeably calmer. That’s the real value.

The transcript feature is also genuinely useful as a sense-check. You answer, you read back what you said, and you realise you never actually got to the point. That moment of “oh, I rambled for 90 seconds without answering the question” is worth more than most paid feedback I’ve seen.

Where it stops being useful

Let’s be clear about the ceiling. The question bank is narrow. If you’re interviewing for a marketing manager role at a mid-size agency, the “general” track will throw you generic background questions, but it won’t have competency-based prompts tailored to your discipline. If you’re going for a nursing post, a legal training contract, or anything in the public sector, this tool is not built for you.

The transcription is also rough. It regularly mangles British accents, struggles with acronyms (I’ve seen it turn “SaaS” into “sass” repeatedly), and drops words. That matters because if you’re relying on the transcript to audit your own answer, a bad transcription tells you a bad story about your performance.

Google also removed the conversational quality “insight” feature that gave you a qualitative comment on your answer. It’s gone. What’s left is quantitative: filler word count, pace, and themes. Useful for pacing. Not useful for “was that actually a good answer?”

And here’s the big one: it doesn’t know if your answer was any good. If you give a bad STAR answer with the wrong situation, no task, weak action and no result, the tool will still happily highlight “experience” and “skill” themes and move on. It’s not a coach. It’s a mirror.

The output test

Let me show you what this actually looks like in practice. I ran through a tech track question: “Tell me about a time you worked with a difficult team member.”

I gave a deliberately average answer. About 45 seconds, some waffle, one mild “um”, a vague situation, no clear result. Here’s roughly what came back:

“So, um, in my last role I was working on a project and there was one team member who wasn’t really pulling their weight. I tried to have a conversation with them about it and we sort of agreed to meet weekly to check in on progress. It got a bit better over time I think.”

The tool flagged:

• Themes detected: “experiences” (last role, project), “qualities” (communication)
• Filler words: 1
• Pace: 142 words per minute (within the “steady” range)

What it missed: no real situation context, no specific action, no measurable result, vague ending. A real interviewer would push back on every one of those. Interview Warmup won’t.

So treat the transcript as a pace and rambling check. Don’t treat it as a content check. For content, you still need a human, a peer, or a tool with an actual rubric.

Who it works for / Who it doesn’t

Good fit:

• First or second interview of your career
• Going for a role in one of Google’s supported tracks
• Naturally anxious and need low-stakes practice to break the ice
• Tight budget with zero tolerance for paid tools

Poor fit:

• Senior roles where competency-based behavioural depth is expected
• UK public sector, healthcare, legal, or academic interviews
• Anyone who already interviews confidently and needs feedback on content rather than delivery
• Panel interview preparation
• Anything requiring presentation or case-study practice

Interview Warmup vs paid alternatives

vs Yoodli: Yoodli gives you deeper speech analytics, pacing over time, and filler word trends across multiple sessions. It has a free tier but the interesting features sit behind a paywall. If you want ongoing tracking, Yoodli is better. If you want a single pre-interview warm-up, Google wins on simplicity.

vs Big Interview: Big Interview has a proper competency rubric, industry-specific question libraries, and video feedback. It’s a paid product (around $79/month at time of writing) and the quality reflects that. If you’re a career-changer or going for a senior role, Big Interview is worth the money. Interview Warmup isn’t trying to compete here.

vs ChatGPT as a mock interviewer: This is the one that’s genuinely changing things. A well-prompted ChatGPT session will give you custom competency-based questions for your industry, follow-up probes, and actual feedback on your STAR structure. It won’t make you speak out loud, which is Interview Warmup’s one edge. My honest take: use ChatGPT for content rehearsal, use Interview Warmup for voice rehearsal. They solve different problems.

My verdict

A free 3.9-out-of-5 tool that earns its rating by doing one narrow thing (voice rehearsal with a transcript) genuinely well, and by refusing to pretend it does anything more.

FAQs

Do I need to sign in to Google to use Interview Warmup? No. You don’t need a Google account, an email address, or any signup. Open the page, pick a track, start answering. That’s one of its best features.

Does Google store my audio recordings? According to Google’s own privacy notes on the tool, your audio is processed in the browser to generate the transcript and is not stored on Google servers. The transcript itself also isn’t saved once you close the session. If privacy is a concern, this is about as clean as it gets.

Does it work for non-tech roles? Sort of. There’s a “general” track with background questions that applies broadly, but the competency-specific content is built around tech, data, UX, IT support, sales, ecommerce and project management. If you’re in healthcare, legal, public sector, finance, academia, or most hands-on trades, you’ll find the questions too generic to move the needle.

Is it good for behavioural interviews? Not really. It doesn’t evaluate STAR structure, competency depth, or whether your story actually answers the question. It’ll tell you that you mentioned “experience” and “skills” themes, which isn’t the same as giving you a good behavioural answer. For behavioural prep, use a human or a tool with an actual rubric.

Does it replace real mock interviews? No, and I’d be annoyed with anyone who told you it does. Real mock interviews with a recruiter, mentor, or coach give you unpredictable follow-ups, honest content feedback, and the pressure of another human watching you. Interview Warmup is a warm-up, which is exactly what the name promises. Use it as rep one and two. Get a human for rep three onwards.

Related reading

• Interview prep hub — everything I’ve written on getting through interviews
• Yoodli review — the paid delivery-coaching alternative
• Yoodli vs Interview Warmup comparison — head-to-head on filler-word tracking, pricing, and when free beats paid
• All interview tools

Should you use it?

If you’ve got an interview in the next 72 hours and you haven’t spoken your answers out loud yet, yes. Open it now. Do five questions. It costs nothing, takes about ten minutes, and will catch the worst of your rambling before a real interviewer does.

If you’ve already done a dozen interviews this year and you’re trying to work out why you keep getting to final round and losing, no. You need content feedback from someone who actually knows your industry. Interview Warmup won’t get you there.