Head to head
Pencil (pen.dev) vs Aura
Pencil (pen.dev) and Aura solve the same job (AI design builders), so this is a pick-one decision. Pencil (pen.dev) is our default here: Names your exact stack as a first-class target — React + Tailwind + shadcn/ui. Draw the article template, and the drawing becomes real components. Because the .pen file lives beside the code, the design and the build cannot silently drift. Watch out: Requires a local checkout via Lovable's GitHub sync — cannot touch the browser editor. Domain is mid-rename (pencil.dev → pen.dev), early access, no published pricing commitment.
Quick read
- Free with no card: Pencil (pen.dev).
- Editor's pick: Pencil (pen.dev).
- No logged gotchas: Aura.
| Field | Pencil (pen.dev)pen.dev Not yet swept | Auraaura.build Not yet swept |
|---|---|---|
| What it is | A Figma-like canvas inside Cursor/VS Code/Windsurf, storing designs as JSON .pen files inside your project folder so they are git-versioned next to the code. Runs as an MCP server, so the agent reads the canvas as structured design context rather than as an image. Two-way: you can import existing components back onto the canvas. | Prompt- or screenshot-driven builder producing responsive HTML + Tailwind + vanilla JS, plus a Figma export with editable frames. Ships a hosted CMS and custom domains. Page builder, not app builder — no backend or auth. |
| Category | AI design builders | AI design builders |
| Cost tier | free | mixed |
| Pricing | Free during early access | Free · $25 / $50 / $100 per mo |
| Why builders pick it | Names your exact stack as a first-class target — React + Tailwind + shadcn/ui. Draw the article template, and the drawing becomes real components. Because the .pen file lives beside the code, the design and the build cannot silently drift. | The Tailwind classes transfer almost losslessly: export HTML, paste into Lovable, ask it to convert to a React component keeping the classes. Better than re-prompting from a screenshot, worse than a real component export — it has zero awareness of shadcn, so you get raw divs, not <Card>. |
| Watch out for | Requires a local checkout via Lovable's GitHub sync — cannot touch the browser editor. Domain is mid-rename (pencil.dev → pen.dev), early access, no published pricing commitment. | not logged |
| How to wire it up | MCP server; assumes Claude Code as the agent | not logged |
| Editor's pick | Yes | No |
Other matchups worth running
Agent endpoint: GET /api/public/compare?slugs=aura,pencil