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| Criterion |  Engineering Goal Question Metric |  Growth North Star Metric |  Growth Hooked Model |  Growth Flywheel |
|---|---|---|---|---|
Purposedifferent | Helps clarify technical problems, hypotheses, and next steps in concrete terms. It breaks a technical problem into testable parts. The result is captured as a GQM table and metric briefs. | 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. | The Hooked Model helps clarify engagement loops, user behavior, and experiments. It makes repeat behavior measurable and captures the result as a hooked loop, trigger map, and reward design. | 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. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | 90-180 min | 1-2 h | Multiple workshops over several weeks | 60-120 min |
Participantsdifferent | 3-6 | 3-8 | 2-8 | 3-8 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | GQM Table, Metric Profiles | North Star metric, Input metric tree, Measurement cadence | Hooked loop, Trigger map, Reward design, Ethics check | Flywheel Map, Friction Points, Growth Levers, Experiment Backlog |
Tagsno overlap | MetricsMeasurementEngineeringAlignment | GrowthMetricsAlignmentRetention | GrowthBehaviorRetention | GrowthRetentionConversion |