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| Criterion |  UX Research Diary Study |  Growth Growth Experiment |  Growth North Star Metric |  Product Strategy Counter Metrics |
|---|---|---|---|---|
Purposedifferent | When experiences build up over days or weeks and a single session cannot capture them, Diary Study records the course of everyday life. Recurring triggers, moods, and habits become visible this way, beyond the sharpness of memory. | When growth ideas surface quickly, the temptation to build immediately instead of learning is high. A Growth Experiment frames an assumption so target group, lever, and measurement are clear before the first deployment. | 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 a headline metric could mask side effects, it adds guardrail signals against unwanted outcomes. It connects customer value, product logic, and decision priorities. The result is captured as a counter-metric list and guardrail definitions. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | 1-4 Wochen | 1-2 Wochen | 1-2 h | 30-60 min |
Participantsdifferent | 5-20 | 1-6 | 3-8 | 2-6 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Experiment card, Result summary, Next bet | North Star metric, Input metric tree, Measurement cadence | Counter Metric List, Guardrail Definitions |
Tagsno overlap | UX researchTrackingBehavior | MarketingGrowthExperimentsLearning | GrowthMetricsAlignmentRetention | MetricsMeasurementStrategyExperiments |