MakeUI vs pen.dev
MakeUI
makeui.designpen.dev
pen.devSide by side
| Figure | MakeUI | pen.dev |
|---|---|---|
| Price from | $9.99/mo | $16/mo |
| Free plan | — | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| API | — | Yes |
| Plans published | 3 | 4 |
| Spec score · AI UI Design Generators | 7.7 (#17) | 8.9 (#3) |
| Data security | The privacy policy says project data is stored with Supabase on AWS using row-level security, and data is transmitted over encrypted HTTPS. | The privacy policy says account data, operational metadata, cloud files, and shared content are protected with encryption in transit and at rest and access controls. |
| What it does | MakeUI turns a plain-text app idea into editable mobile UI screens and generates HTML/CSS that can be exported to code or Figma. | pen.dev is an AI-assisted design editor where agents create or modify vector designs on a canvas and users can export the result to code. |
Plans
In their own words
pen.dev
pen.dev is a canvas for building software and a vector design tool integrated with development environments. Its editor works with components, variables, themes, scripts and shaders, and can import Figma files and HTML. It can export to HTML, CSS and Tailwind, as well as PNG, JPEG, WEBP and PDF. Users can work with its integrated agent or connect external agents through MCP; the available plans specify how many agents can run in parallel. Documented integrations include Claude Code, Codex, Gemini CLI, Antigravity, OpenCode, Kiro and Claude Desktop. Integrated provider options include OpenAI, Anthropic, Google Gemini, Cursor, GitHub Copilot, xAI, OpenRouter and other API-key providers. Its.pen design file is open JSON with an open schema. Tools include a Chrome extension for importing webpages, IDE extensions and an npm-installed CLI requiring Node.js 22.19 or later. The pricing page says pen.dev stays free until plans launch. The Free plan is free; Pro is $16 a month; Ultra is $48 a month.