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| Criterion |  Growth North Star Metric |  Growth A/B Testing |  Product Discovery Smoke Test |  Growth Pirate Metrics AARRR |
|---|---|---|---|---|
Purposedifferent | When product teams track many metrics, the view of the actual customer outcome easily gets lost. A North Star Metric bundles growth, usage, and value contribution into one signal that makes the system's direction visible. | When two variants compete, discussions quickly decide by taste rather than effect. A/B Testing checks behavior under controlled conditions and separates real improvement from chance or expectation effects. | 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. | 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. |
Complexitydifferent | Medium | High | Low | Medium |
Timedifferent | 1-2 h | 1-4 Wochen | 1-5 Tage | 1-2 h Setup, laufend |
Participantsdifferent | 3-8 | 1-6 | Nutzertraffic | 2-8 |
Formatdifferent | Workshop + async | Async | Async | Workshop + async |
Outputdifferent | North Star metric, Input metric tree, Measurement cadence | Experiment results, Decision log, Learning summary | Interest Metrics, Conversion Signal, Learning Note | AARRR funnel, Metric baseline, Experiment backlog |
Tags1 shared | GrowthMetricsAlignmentRetention | ExperimentsGrowthAnalyticsValidation | ValidationExperimentsDemandGrowth | GrowthMetricsExperiments |