Google integrates Gemini 3 into Stitch to create prototypes
Google integrates Gemini 3 into Stitch to improve interface generation and adds Prototypes, a feature that connects screens and lets you create interactive user flows. The tool is still experimental and is designed to help validate app ideas before development.
Google has integrated Gemini 3 into Stitch, its experimental AI design tool, to generate higher-quality user interfaces and turn ideas into functional screens.
The update adds a feature called Prototypes, which lets you connect different screens on the same canvas. Stitch is no longer limited to creating static designs. You can also define interactions and complete user flows within an app.
From an idea to a user flow
In practice, you can go from imagining an app to building a first navigable version. For example, you can create a home screen, link it to a form, and add a confirmation screen to simulate the sign-up flow.
The tool generates the interface from your instructions and now lets you connect those screens to show how the experience would work. It does not replace app development, but it can help you validate an idea before writing code or presenting it to a team.
A feature that is still experimental
Google says that Prototypes is still experimental and that more improvements are on the way. The company is inviting users to try it and submit feedback.
You can access the tool at stitch.withgoogle.com. The important change is the shift in focus: AI is not only suggesting what an app looks like, it is also starting to represent how people use it.