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| Criterion |  Product Discovery Test Card |  Growth Funnel Analysis |  Product Discovery Fake Door Test |  Product Discovery Smoke Test |
|---|---|---|---|---|
Purposedifferent | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | When many visitors or users drop off along the way, the reason behind the number often stays hidden. Funnel Analysis exposes these transitions and makes visible exactly where the path collapses. | 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. | When demand only needs to be roughly verified, it tests interest with minimal effort. It measures whether people would take a next step at all. |
Complexitydifferent | Low | Medium | Medium | Low |
Timedifferent | 20-35 min | 1-3 h | 1-5 Tage | 1-5 Tage |
Participantsdifferent | 1-5 | 1-5 | Nutzertraffic | Nutzertraffic |
Formatdifferent | Workshop + async | Async | Async | Async |
Outputdifferent | Test Card with a pre-set threshold | Funnel report, Drop-off analysis, Optimization hypotheses | Click Data, Interest Signal, Learning Decision | Interest Metrics, Conversion Signal, Learning Note |
Tagsno overlap | ExperimentsValidationDiscoveryHypothesis | AnalyticsConversionGrowth | ValidationExperimentsDemandDiscovery | ValidationExperimentsDemandGrowth |