Question 1

What is idea validation?

Accepted Answer

Idea validation is the process of testing the riskiest assumptions behind a new product or business idea with real potential customers before you build anything. The goal is to gather evidence that the problem is real, the customer is reachable, and they'd actually pay for a solution.

Question 2

How do I validate a startup idea quickly?

Accepted Answer

Start by writing your idea and target customer in one sentence each, then list the assumptions you're making about desirability (do they want it?), viability (can it be a business?), and feasibility (can you build it?). Rank each by importance and evidence. The high-importance, low-evidence assumptions are what you test first — usually with 5-10 discovery interviews.

Question 3

What's the riskiest assumption in my idea?

Accepted Answer

It's the assumption that, if wrong, sinks the whole idea — and that you currently have the least evidence for. Vouch surfaces this automatically: paste your idea, and it ranks assumptions across Desirable, Viable, and Feasible so the single most dangerous bet is at the top.

Question 4

How many customer interviews do I need to validate an idea?

Accepted Answer

For each risky assumption, 5-8 interviews with the right segment is usually enough to see patterns. If you're hearing the same objection or the same unmet need from 3+ people in a row, that's a strong signal. Vouch's free tier includes 10 interviews per month.

Question 5

Is Vouch's idea validator free?

Accepted Answer

Yes. You can generate ranked assumptions for your idea without signing up. Save your run to a free workspace to track interviews, score segments, and grow evidence over time — no credit card required.

Question 6

What's the FeDeVi framework?

Accepted Answer

FeDeVi is a customer-validation framework that ranks assumptions across three axes: Desirable (do customers want it?), Viable (can it sustain a business?), and Feasible (can you actually build it?). Vouch is built around FeDeVi natively.

Find the riskiest thing about your idea — in 60 seconds.