Run user tests on real prototypes
Create realistic interactive flows, share with testers, and collect meaningful feedback in minutes — not weeks.
How it works
From idea to tested prototype in four steps
A prototyping workflow designed for speed, real feedback, and confident decisions
Define your testing goal
Describe the flow you want to test — onboarding, checkout, navigation, or any key user journey in your product.
Build the interactive flow
Greta creates a fully interactive, multi-screen prototype that mimics how the real product would behave.
Share with real users
Send a link to your testers. They interact with the prototype on any device without downloading anything.
Update from insights
Turn testing observations into product decisions immediately. Update and re-test the same day.
Platform
Test more. Guess less.
Every feature speeds up the path from question to answered.
True-to-Life Flows
Build prototypes that behave like the real product so testers react authentically.
Device-Ready
Share prototypes that work on desktop, tablet, and mobile without extra configuration.
Fast Turnaround
Go from research question to test-ready prototype in minutes, not days.
No Tester Friction
Testers access prototypes via a link — no setup, no app install, no confusion.
Same-Day Iteration
Apply insights from morning sessions and re-test by afternoon without losing momentum.
FAQ
Got more questions?
Everything you need to know before you start prototyping with Greta.
No. Any team member can build and share a test prototype. Research expertise helps but isn't required.
Update instantly. Changes apply immediately so every session gets the latest version.
Categories
Explore other categories
Greta works across every prototyping use case. See what else you can build and test.
Build Something Real
If you can describe it, you can build it.