Free Startup Tool
Free Risk Assumption Validator
Find the riskiest assumptions behind your idea — desirability, viability, and feasibility — plus the cheapest test for each. No signup.
Find the riskiest assumptions behind your idea — desirability, viability, and feasibility — plus the cheapest test for each. No signup.
Tell us what you're building and who it's for.
e.g. InvoiceKit, for freelance designers
We map your idea against the classic Lean Startup risk framework: desirability (do people want it), viability (will they pay), and feasibility (can you build it).
e.g. 6 assumptions across 3 categories
Each assumption ships with the cheapest experiment that would prove or disprove it — before you write a line of product code.
e.g. Post the problem (not the solution) in 2-3 communities
Before running any experiment, validate that people are already complaining about this problem using our free idea validator.
e.g. See real pain points from Reddit, Hacker News, and Indie Hackers
A risk assumption is something you're betting on being true without proof yet — that people want your product, that they'll pay enough for it, or that you can actually build and deliver it. The riskiest assumptions are the ones most likely to be wrong and most damaging if they are.
These are the three classic risk categories from Lean Startup methodology. Desirability asks whether people actually want this. Viability asks whether the business model works — will they pay enough, and can you acquire them affordably. Feasibility asks whether you can actually build and support it with the resources you have.
Building a full product to test whether people want it is the most expensive way to find out. Each assumption here comes with a lower-cost experiment — a landing page test, a handful of conversations, a manual "fake it" version — that surfaces the truth faster and cheaper than building first.
No — the assumptions and experiments are generated from a fixed Lean Startup framework applied to your product and audience, not an AI's guess. That means the same input always produces the same, predictable output, and it runs instantly with no API calls.
This tool maps out what you'd need to test to de-risk your idea. Our free idea validator instead checks whether people are already complaining about the underlying problem on Reddit, Hacker News, and Indie Hackers — real evidence of desirability, not a framework. Use both together: map your risks here, then check the desirability one against live data.
Yes — generating your risk assumptions and experiments is completely free with no signup required.