Prototype testing
Also called Figma prototype testing, concept testing
Prototype testing puts an unfinished design in front of users to see whether they can complete the key tasks before anything is built.
A prototype can be a clickable Figma flow, a published Figma Make site, a v0 or Claude artifact, or a preview deployment. What matters is that there is something to click, so a tester can attempt the task rather than describe what they would do.
The earlier a problem is found, the cheaper it is to change, but early is also when a recruited round is hardest to justify. That tension is why many prototypes ship untested.
Where Stunt Double fits
Anything with a reachable URL can be tested, including Figma prototypes, Figma Make sites and Claude artifacts. Actors work through the flow and return the steps and the screen where they stopped.
Related terms
- Usability testingUsability testing watches people attempt real tasks in a product to find where they hesitate, make mistakes or give up.
- Heuristic evaluationHeuristic evaluation is an expert review of an interface against a set of principles, such as Nielsen’s ten usability heuristics, that lists each problem found and the principle it breaks.
- AI user testingAI user testing sends AI agents with defined personas through a product in place of recruited participants, and reports what each one did and where it got stuck.
- Synthetic researchSynthetic research is user research run with AI participants instead of recruited people: interviews, usability tasks and studies where the participants are personas played by AI agents.
See it on your own site
Give an actor your URL. It opens a real browser, works through the site, and shows you every step it took.
Free to start, or watch a live demo.