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| Criterion |  Product Discovery Experiment Canvas |  Agile Starfish Retrospective |  Product Discovery Test Card |
|---|---|---|---|
Purposedifferent | When experiments become unreadable after the fact, it arranges hypothesis, signal, and learning goal on a single canvas. It separates problem, assumption, solution, and evidence. The result is captured as a Completed Experiment Canvas and a Success Metric. | When improvement options need to be sorted more finely than just start and stop, it brings observations into clear kinds of action. This makes visible what should be done more, less, newly, or continued. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitysame | Low | Low | Low |
Timedifferent | 30-60 min | 45-90 min | 20-35 min |
Participantsdifferent | 1-5 | 4-12 | 1-5 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Completed Experiment Canvas, Success Metric | Starfish Board, Practice Changes, Experiments | Test Card with a pre-set threshold |
Tags1 shared | ExperimentsValidationDiscoveryHypothesis | RetrospectiveImprovementExperimentsTeam | ExperimentsValidationDiscoveryHypothesis |
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