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| Criterion |  Growth Flywheel |  Growth Pirate Metrics AARRR |  Product Discovery Learning Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | Growth often breaks down where a reinforcing mechanism builds up too much friction. A Flywheel shows the cycle of value, repetition, and reinforcement meant to sustain growth. | 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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | 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 | 60-120 min | 1-2 h Setup, laufend | 25-40 min | 1-5 Tage |
Participantsdifferent | 3-8 | 2-8 | 1-5 | Nutzertraffic |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Async |
Outputdifferent | Flywheel Map, Friction Points, Growth Levers, Experiment Backlog | AARRR funnel, Metric baseline, Experiment backlog | Learning Card with evidence and next action | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | GrowthRetentionConversion | GrowthMetricsExperiments | ExperimentsValidationDiscoveryLearning | ValidationExperimentsDemandDiscovery |