View methods side by side.
Choose up to four methods. Add them using the search and share the comparison by copying its link.
| Criterion | ![]() Product Discovery Test Card | ![]() Agile Starfish Retrospective | ![]() Product Discovery Experiment Canvas |
|---|---|---|---|
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. |
Complexitysame | Low | Low | Low |
Timedifferent | 20-35 min | 45-90 min | 30-60 min |
Participantsdifferent | 1-5 | 4-12 | 1-5 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Test Card with a pre-set threshold | Starfish Board, Practice Changes, Experiments | Completed Experiment Canvas, Success Metric |
Tags1 shared | ExperimentsValidationDiscoveryHypothesis | RetrospectiveImprovementExperimentsTeam | ExperimentsValidationDiscoveryHypothesis |
Often compared together
Methods with strong topical overlap with the current selection, not yet in the comparison.






