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| Criterion |  Product Discovery Test Card |  Agile Starfish Retrospective |  Product Discovery Experiment Canvas |  Product Discovery MVP Test Matrix |
|---|---|---|---|---|
Purposedifferent | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | 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. | 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 several minimal variants compete to answer the same question, it makes comparing and choosing between them cleaner. It separates problem, assumption, solution, and evidence. The result is captured as a Test Matrix and a Test Plan. |
Complexitydifferent | Low | Low | Low | Medium |
Timedifferent | 20-35 min | 45-90 min | 30-60 min | 45-75 min |
Participantsdifferent | 1-5 | 4-12 | 1-5 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Test Card with a pre-set threshold | Starfish Board, Practice Changes, Experiments | Completed Experiment Canvas, Success Metric | Test Matrix, Test Plan |
Tags1 shared | ExperimentsValidationDiscoveryHypothesis | RetrospectiveImprovementExperimentsTeam | ExperimentsValidationDiscoveryHypothesis | ExperimentsValidationDiscoveryOptions |