Claude Design for mobile apps: how to use it and where it breaks

Claude Design can make phone-sized HTML prototypes for mobile apps. Start with a mobile brief, refine the canvas, then hand off for implementation. Review native iOS/Android conventions yourself; Anthropic lists no Figma export. Design usage shares your Claude plan's limits, so budget for both design and coding.

We make Sleek. Vendor pages checked on 2026-09-30; we tested Sleek, Stitch and Claude Design hands-on.

These boundaries follow Anthropic's product page and current help guide, checked in September 2026. A clickable concept can answer whether an idea makes sense. A native app still needs implementation and device testing. This guide explains that handoff, including a proposed Claude Code and Sleek workflow.

How to use Claude Design for mobile app prototypes

Start a design with a brief that names the target platform, the user's task, and the screens needed to finish it. Add visual references, inspect the first flow, then change specific elements. Keep the concept small enough to review before you spend time refining screens that the app may not need.

1. Start in Claude's Design template or use /design in Claude Code. The standalone claude.ai/design canvas also remains available.
2. Bring your own colors, fonts, and components through a design system. Add references that explain the layout you want, and name iOS or Android in the brief.
3. Refine the result with comments, direct text edits, and adjustment controls. These are documented in Anthropic's launch announcement. Ask for one specific correction at a time so you can judge what changed.
4. Review the flow, then export or hand off. Claude Academy's handoff guide describes a bundle of design files, chat, and a README, with a prompt for your coding agent.

Here is an example brief to adapt:

Design a phone-sized prototype for an iOS meal-planning app.
The user needs to choose tonight's dinner and save its ingredients.
Include a weekly plan, recipe detail, and shopping list in one flow.
Use a warm cream background, dark green accents, and readable type.
Show an empty shopping list and a failed-save state.
Explain the navigation decisions and which native behaviors still need implementation.

Before handoff, ask someone else to complete the task without explaining the screens first. Can they find the recipe, return to the plan, and tell whether ingredients were saved? Record the confusing steps in the brief. Color changes can wait until the flow makes sense.

Can Claude Design make mobile apps?

Yes, if you mean a mobile app concept or interactive prototype. A phone-sized preview lets you discuss screens and try a flow. Treat the prototype as a design reference and decide separately how the app will be implemented.

Anthropic documents code-powered prototypes and HTML export. Its product page does not advertise native app builds or guaranteed iOS/Android conventions. Claude Academy also documents complete user flows.

If you only need feedback on the concept, that may be enough. For a broader tool choice, compare the AI tools for mobile app design.

Where does Claude Design break down for mobile apps?

The risky handoff is assuming that a convincing preview settles native behavior, editable design delivery, and implementation. Check those separately. Claude Design's documented workflow leaves platform validation to you, omits Figma from its export list, and shares usage with the rest of Claude. Each affects what you can do next.

Native conventions need a review

Use the prototype to ask concrete questions. Does a detail screen have a clear way back? Does the keyboard cover the main action? What happens around the status bar, with larger text, or when a save fails? Request separate iOS and Android decisions where the behavior differs. A desktop canvas cannot replace checking the implemented app on a device.

Figma handoff needs another step

There is no direct Figma export in Anthropic's documented menu. Do not promise a teammate editable Figma layers from an HTML download. Choose the next design tool before polishing the whole flow. Our Claude Design alternatives guide compares options when the delivery format determines the choice.

Iteration uses the shared Claude allowance

Design usage counts against your Claude plan alongside other work, including Claude Code. Keep a short list of decisions to resolve before generating more variations. Check your account's remaining usage before a long design and coding session.

How do you take a Claude Design concept into Sleek with Claude Code?

Use the Claude Design concept as a reference brief, then ask Claude Code to create mobile screen designs in Sleek. Review those screens in Sleek and export them for the next step.

Carry the decisions into the brief

Give Claude Code the handoff files and the approved screen list. Ask it to retain the content, visual direction, and user task, while naming the native navigation and missing states that still need design. If the concept already answers every design question, you can proceed with implementation without adding another design tool.

Connect Claude Code to Sleek

The Sleek agent setup provides a prompt for Claude Code. It installs the official skill and sends you a link to sign in and approve the connection. The skill tells the coding agent how to use Sleek's REST API. The manual install command is:

npx skills add sleekdotdesign/agent-skills -s sleek-design-mobile-apps

Sleek also exposes an MCP server at https://sleek.design/api/mcp for compatible clients. The skill, MCP server, and REST API are ways to control Sleek, not extra design stages you must complete. With MCP, the sequence is to create or reuse a project, request a design, inspect screenshots, and open the returned project URL.

Request the screen set together

Ask the agent to design the whole flow in one Sleek project, with related screens in one request. Specify the platform and reuse the decisions from the concept. For example:

Use Sleek to design the iOS meal-planning flow from this brief.
Create the weekly plan, recipe detail, and shopping list together.
Keep the approved colors and copy. Include the empty and failed-save states.
Show me screenshots and the Sleek project URL so I can review before export.

Review the results in the editor before requesting changes. Check the same navigation labels, text styles, and primary actions across screens. Sleek generates editable iOS/Android screen designs; you still decide whether the result fits your app.

Export the design, then implement

Open the Sleek project to export editable Figma layers or React with Tailwind code. React with Tailwind is web UI code, not a React Native, SwiftUI, or Kotlin app. Give your coding agent the designs as references for the chosen native stack, then review its implementation on devices.

On Sleek Free, you can export unlocked screens to Figma or code. As of September 2026, Free includes 60 one-time credits, one project, and three screens, with trial access for agents. Pro includes ongoing API and skill access at $69/month or $360/year. Check Sleek pricing before choosing a plan for repeated design work.

Can you use Claude Design on mobile?

Yes. Anthropic's help guide says you can request a design in the Claude app for iOS or Android and view the result in Artifacts. Starting from templates, editing on the canvas, and changing sharing settings need the web or desktop app. Using Claude on your phone is different from generating native mobile app code.

For the next design session, write down the user task and the required screens first. If you need editable mobile designs beyond the Claude concept, connect Claude Code through the Sleek setup above and request that screen set together.

Frequently asked questions