
PersonaStorm is a product wind tunnel: paste a concept, landing page, ad, or pricing table, and 1,000 evidence-backed synthetic personas evaluate it across 17 calibrated market criteria, streaming live as a green/yellow/red swarm. Every number — including the market-fit score — is computed by a deterministic scoring engine, never invented by an LLM, and a trust/calibration panel tells you exactly how much to believe each run. Built as a full SaaS (Next.js, Supabase auth, credit billing, admin console) with Fireworks AI inference, an offline mock mode, and 421 passing tests, it delivers directional market research in about a minute, for cents.
13 Jul 2026