Lean Experiment Designer

Converts an untested product or growth idea into a rigorous lean experiment design — riskiest-assumption identification, a falsifiable hypothesis, the minimum test to run, primary and guardrail metrics, sample size and duration estimates, decision thresholds, and a next-steps ladder. Use when a PM or growth manager describes an idea, feature, or optimization they haven't validated and needs a structured A/B test or lean experiment to test it before building.