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| Criterion |  Growth Flywheel |  Growth Pirate Metrics AARRR |  Product Discovery Fake Door Test |  Product Discovery Learning Card |
|---|---|---|---|---|
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. | 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 Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | 60-120 min | 1-2 h Setup, laufend | 1-5 Tage | 25-40 min |
Participantsdifferent | 3-8 | 2-8 | Nutzertraffic | 1-5 |
Formatdifferent | Workshop | Workshop + async | Async | Workshop + async |
Outputdifferent | Flywheel Map, Friction Points, Growth Levers, Experiment Backlog | AARRR funnel, Metric baseline, Experiment backlog | Click Data, Interest Signal, Learning Decision | Learning Card with evidence and next action |
Tagsno overlap | GrowthRetentionConversion | GrowthMetricsExperiments | ValidationExperimentsDemandDiscovery | ExperimentsValidationDiscoveryLearning |