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| Criterion |  Growth Pirate Metrics AARRR |  Product Discovery Riskiest Assumption Test |  Product Discovery Test Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
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 an idea hinges on one critical unknown, it prioritizes testing that exact piece of uncertainty first. It separates problem, assumption, solution, and evidence. The result is captured as a prioritized list of assumptions, a test plan, and a result report. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | 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. |
Complexitydifferent | Medium | Medium | Low | Medium |
Timedifferent | 1-2 h Setup, laufend | 1-2 Wochen pro Iteration | 20-35 min | 1-5 Tage |
Participantsdifferent | 2-8 | 2-6 | 1-5 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | AARRR funnel, Metric baseline, Experiment backlog | Prioritized Assumption List, Test Plan, Results Report | Test Card with a pre-set threshold | Click Data, Interest Signal, Learning Decision |
Tags1 shared | GrowthMetricsExperiments | ExperimentsValidationDiscoveryAssumptions | ExperimentsValidationDiscoveryHypothesis | ValidationExperimentsDemandDiscovery |