Describe the app you want and Sleek designs the screens for it. Onboarding, home, checkout, a profile page, whatever the app needs. It builds them as one set so they read like a single app instead of five loose mockups, then shows them in the chat. Open the project link to edit any screen, change the layout or the copy, and export what you make. No design skills required. If you can describe the app, you get screens back in a few minutes.