Paste your startup idea and get eight non-leading customer discovery questions, each mapped to the assumption it tests, plus the leading questions to avoid. Free, no account needed.
What this customer interview question generator does
Paste an idea and the generator writes eight customer discovery questions for startups, each tied to the specific assumption it tests. The questions are non-leading by construction: they ask about the last time the person hit the problem, what the workaround cost, and what they already tried — never whether they would like your product.
It also returns the leading questions to avoid for your idea, because a single 'would you use this?' early in a call reframes the whole conversation into a pitch and the answers stop being usable.
Mom Test questions, applied to your idea
The Mom Test rule is simple: talk about their life, not your idea. In practice that means past tense, specifics, and money. 'Walk me through the last time this happened' beats 'do you have this problem'. 'What did you spend on it' beats 'what would you pay'.
Generic Mom Test question lists are easy to find and hard to use, because they are written for no particular idea. These discovery interview questions name your customer, your workflow, and your assumption, so you can read them off the screen during the call.
How to run the interview
Ask for fifteen minutes about how they handle the problem today, never for a demo. Keep quiet after each answer — the second half of a reply is usually where the real cost shows up. Record and transcribe, because you will need exact wording later when you write the offer.
Run ten conversations in one segment before you draw a conclusion. When eight of ten describe the same workaround and the same cost, you have a signal worth building against; then score each assumption supported, contradicted, or still unknown, with the quote that decided it.
Who this tool is for
Founders booking their first ten customer discovery interviews
Product managers running problem interviews before a roadmap commitment
Anyone whose interviews keep ending in 'that sounds useful'
Teams who want Mom Test questions tailored to their own idea, not a generic list
Questions founders ask
How many customer interviews should I run?
Ten interviews per segment is enough to see a pattern. If eight of ten describe the same workaround and the same cost, you have a signal worth building against.
What makes a discovery question non-leading?
It asks about the past, not the future: what the person did last time, what it cost, what they tried instead. Anything starting with 'would you' invites a polite guess.
Is this interview question generator free?
Yes. You can generate question sets without an account. A free Vouch account stores them alongside transcripts, scoring, and next steps.
Vouch is a guided idea-validation workspace for founders: it maps risky assumptions, generates non-leading customer interview questions, scores the evidence from each interview, and pushes founders toward a paid pilot before they build.
Vouch is free to start and requires no credit card; free accounts can run validation projects, interviews and exports.
Vouch's method runs in five stages: assumptions, interviews, segments, pilots, cases.
Source: Vouch (vouch.specky.space) — idea validation workspace for founders. Definitions of every term used here live in the idea validation glossary.