View methods side by side.
Choose up to four methods. Add them using the search and share the comparison by copying its link.
| Criterion |  Decision Making PERT Estimation |  Agile Affinity Estimation |  Growth North Star Metric |  Growth Flywheel |
|---|---|---|---|---|
Purposedifferent | On complex initiatives, a plain average tends to understate just how uncertain the outcome really is. It separates options, evaluation criteria, and open risks. The result is captured as a PERT Estimate, Expected Value, and Risk Notes. | When many tasks need to be classified quickly, it sorts them by perceived effort and similarity. It reduces the effort of fine-grained estimation for large volumes. | 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. | 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 | 15-45 min | 30-90 min | 1-2 h | 60-120 min |
Participantsdifferent | 1-8 | 3-12 | 3-8 | 3-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | PERT Estimate, Expected Value, Risk Notes | Affinity Size Map, Grouped Estimates, Unclear Items | North Star metric, Input metric tree, Measurement cadence | Flywheel Map, Friction Points, Growth Levers, Experiment Backlog |
Tagsno overlap | EstimationUncertaintyRisk | EstimationBacklogRelative sizing | GrowthMetricsAlignmentRetention | GrowthRetentionConversion |