Prototype testing
Test your prototype with real people
People work through tasks in your prototype, and you read what they did and said before the next build.Paste your prototype URL and Fiuto builds a free prototype test for you in minutes. No experience required.
A preview player for the prototype test. It steps through the four blocks a respondent sees, and is paused on the third: the task running inside the embedded prototype, with the Fiuto panel floating over it holding the task as they tap through.
What is prototype testing?
A prototype test puts an early version of a product in front of the people it is for. You give them a task or a focused question, then look at how they respond before the expensive parts become expensive.
It works with rough screens, clickable designs, and working web prototypes. Static screens use image and click methods, a public URL gets a live task, and the fidelity can change while the job stays the same.
The result is a card per question or task, shaped by the method: counts, distributions, written answers, or captured task recordings. Read them together and you know what the next version needs.
When to run oneRun one on the part of the product that is both important and uncertain, before you build the next version.
Is prototype testing the right method?
It is worth two minutes to check prototype testing is the method you want.
Reach for it when
You have a rough screen, a clickable design, or a working prototype and want to see how people use it before the next build
You are choosing between two directions and need to know which one holds up with real people.
You need to fix a confusing path before it reaches production.
Your coding agent built a working web prototype and you want it validated before the next build.
Reach for something else when
You need evidence about demand, pricing, acquisition, or repeat use, not just how people understand or use the prototype. That is wider MVP validation.
The site is already live, a live website test is the direct route.
The question is just where people click first on one screen, a first-click test is the lighter method.
Prototype testing tips
Name the next decision
Write the decision in plain language before you choose a method. The lightest prototype that can answer it is usually enough.
Build one focused study
Set the context, give one clear task at a time, and ask only the follow-up questions that explain the behaviour.
Preview the whole route before you launch
Take the study as a respondent would, and check the prototype link, task wording, and every ending first.
Frequently asked questions
01What is prototype testing?
Prototype testing puts an early version of a product in front of real people so you can see how they understand it, use it, and explain their choices before you build the next version.
02How do you test a prototype?
Name the decision, choose the lightest prototype that can answer it, build a focused study, preview the full route, launch it, share the respondent link, and review the evidence by question and task.
03What should I test first?
Test the part that is both important and uncertain. That might be the first step in a flow, the meaning of a screen, the path through a key task, or the choice between two directions.
04Can I test a Figma prototype or a live website?
Yes. Use image and click methods for static screens, or a live prototype task for a public browser URL. Choose the method around the question, not around how polished the prototype looks.
05Does Fiuto recruit testers?
Yes. Describe the audience you need and Fiuto recruits it from Prolific's global panel, with demographic filters and the total shown before you order. You can also share the study link with your own users, customers, waitlist, or community, and the two kinds of run stay labelled separately.
06Do respondents need a Fiuto account?
No. Anyone with the respondent link can take the launched study without a Fiuto account.
07Can my coding agent create the prototype test?
Yes. An MCP-ready builder can author and launch a Fiuto study from where the prototype is being built. If it can edit a live web prototype, it can also install Fiuto tracking.
08Is prototype testing the same as MVP validation?
No. Prototype testing is one input to MVP validation. It can show how people understand and use an early experience, but wider questions about demand, pricing, acquisition, and repeat use need additional evidence.
09What results does Fiuto show?
Fiuto shows a result card for each question or task in the launched study. The shape follows the method, such as counts, distributions, written answers, tested-asset results, or captured live-task results.
10Do AI respondents go through the study before real people?
Yes, on every plan including Free. Up to five AI respondents work through the study first so you get a read in minutes and catch an unclear task early, and up to two of them can be AI experts in conversion, usability, copy or SEO. Then real people answer the same study, recruited from Prolific's global panel or reached through your own link.
11Does Fiuto run AI interviews?
AI interviews are an upcoming feature, in development now, and this page will list them the day they are out of alpha. Until then Fiuto runs unmoderated studies across 18 methods, with AI respondents first and real people after.