Turn ideas into testable concepts
Get a clickable prototype from any idea and validate your assumptions with real users before a single line of code is written.
How it works
From idea to tested prototype in four steps
A prototyping workflow designed for speed, real feedback, and confident decisions
Describe your concept
Tell Greta what your product does, who it's for, and what problem it solves. Plain language is all you need.
Get a clickable prototype
Greta generates a realistic, interactive prototype with real flows, screens, and navigation you can share immediately.
Test with your audience
Share the prototype link with users, teammates, or investors. Gather reactions before writing a single line of code.
Iterate on what matters
Update the prototype instantly based on feedback. Keep iterating until your concept is validated and ready to build.
Platform
Validate ideas at the speed of thought.
Every feature is designed to help you test faster and commit to the right direction.
Instant Prototypes
Go from idea to interactive UI in minutes without needing design or engineering resources.
Shareable Links
Share your prototype instantly with anyone — users, investors, or your team — no setup required.
Realistic Flows
Create multi-screen experiences with real navigation so testers interact with your concept naturally.
Rapid Iteration
Update layouts, copy, and flows in real time based on feedback without starting over.
Confidence Before Cost
Eliminate guesswork before committing budget to full development. Build only what's proven to work.
FAQ
Got more questions?
Everything you need to know before you start prototyping with Greta.
No. Just describe your idea in plain language and Greta generates a polished prototype ready to test.
It complements it. Prototypes give you fast directional signal so your formal research is better targeted.
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.