EaseUI vs pen.dev

EaseUI is a web tool that turns natural-language prompts into user interfaces, with design tokens, component libraries and HTML/CSS exports. Each prompt generates six design variants, which users can review on an infinite canvas and refine using an inspector that displays and edits CSS properties in real time. EaseUI imports Figma frames to generate HTML and can send generated designs back as editable Figma layers. It can extract colors, typography, spacing, radii and shadows into structured tokens, and create component specimens. Exports include a single HTML file or a ZIP bundle with variants, design systems and a README. The tool supports Google Gemini, Anthropic Claude and OpenAI models. Designs, project data and API keys are stored in browser storage; clearing that data deletes local projects. The free plan provides one generation session of six variants, and another generation requires an upgrade. Premium costs $99, paid once, billed one-time.

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.