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| Criterion |  Growth Pirate Metrics AARRR |  Product Discovery Fake Door Test |  Product Discovery Test Card |
|---|---|---|---|
Purposedifferent | For products with complex usage paths, overall growth alone is too coarse to reveal bottlenecks. Pirate Metrics breaks the relationship with the product into consecutive stages and shows where the funnel actually leaks. | When demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | Medium | Medium | Low |
Timedifferent | 1-2 h Setup, laufend | 1-5 Tage | 20-35 min |
Participantsdifferent | 2-8 | Nutzertraffic | 1-5 |
Formatdifferent | Workshop + async | Async | Workshop + async |
Outputdifferent | AARRR funnel, Metric baseline, Experiment backlog | Click Data, Interest Signal, Learning Decision | Test Card with a pre-set threshold |
Tags1 shared | GrowthMetricsExperiments | ValidationExperimentsDemandDiscovery | ExperimentsValidationDiscoveryHypothesis |
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