Clarno
Runs a startup idea through market sizing, buyer objections and a kill test before you build.
Clarno walks an idea through five steps: who feels the pain most, how many reachable buyers exist, what they already pay competitors, and ten simulated buyers — each with a specific, named objection — who say whether they'd buy. For a household-robotics-data example it counted 14 companies, estimated 4 reachable in six months, found a seller already charging $44 an accepted hour, and flagged that no public buyer payment exists yet for the exact product. It ends with a narrowed version to build first.
What holds up
- +Names a specific, falsifiable "what would kill this" check for every idea variant
- +Simulated buyers carry individual objections — proof demander, skeptic, impatient quitter — not one voice
- +Gives counted numbers (companies found, reachable buyers, seller prices) instead of a vague TAM
- +The full first pass is free
Mind the limits
- −Numbers come from estimates and public data, not a live buyer survey — still needs real validation
- −The actual go/no-build verdict (the Blueprint) sits behind a paid plan
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