What is Sleek used for?

Sleek is an AI mobile app designer: you chat or attach an image, it generates iOS and Android app screens, and you export the designs to code or Figma. It is a good fit for prototyping an app idea before hiring a designer and generating screens from a Claude Code workflow.

Yes. Sleek has a free plan, and paid plans start at $39 per month.

Is Sleek open source?

No. Sleek is proprietary (closed-source) software and can't be self-hosted. In the Design category, open-source options include Penpot, OpenPencil and Graphite.

What are some alternatives to Sleek?

Sleek competes with Uizard, Google Stitch and Visily.

Sleek: features, pricing and alternatives

About Sleek

Sleek is a hosted tool for designing mobile apps by chatting with AI. You describe the app you want or attach an image, and it generates app screens for iOS and Android that you can refine with quick edits. The homepage also invites Claude Code users to let the agent design their app through Sleek.

The site offers example prompts with named visual styles such as neo-brutalism, glassmorphism, playful whimsical and soft clay, a library of reference designs you can fork or use as inspiration, and templates. Finished designs can be exported to code or to Figma. It also lists an App Store screenshots tool and a blog. Sleek is aimed at people who need app designs without a design team, such as solo builders and startups testing an idea before they hire a designer.

Key features

Chat-based generation of mobile app screens
iOS and Android design output
Attach an image as a starting point
Reference designs to fork or use as inspiration
Quick edits to refine generated screens
Export designs to code or Figma

Good fit for

Prototyping an app idea before hiring a designer
Generating screens from a Claude Code workflow

Tags: app-design; ai-design; mobile; figma; ui-design; prototyping

Sleek: questions and answers

What is Sleek used for?: Sleek is an AI mobile app designer: you chat or attach an image, it generates iOS and Android app screens, and you export the designs to code or Figma. It is a good fit for prototyping an app idea before hiring a designer and generating screens from a Claude Code workflow.
Is Sleek free?: Yes. Sleek has a free plan, and paid plans start at $39 per month.
Is Sleek open source?: No. Sleek is proprietary (closed-source) software and can't be self-hosted. In the Design category, open-source options include Penpot, OpenPencil and Graphite.
What are some alternatives to Sleek?: Sleek competes with Uizard, Google Stitch and Visily.