Side by side
Mowgli vs pen.dev
Both stand on ai ui design generators. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APIWeb
Mowgli combines product planning, interface generation, prototyping, and design exports in one canvas. Consider the credit rules and annual billing details when evaluating its free and paid plans.
Visit Mowgli Free plan APIExtensionLinux+3
Choose pen.dev if you want vector design, software building and AI agent workflows in a single canvas, with imports, multiple export formats and an open design format. The free tier has monthly agent and generation caps; the published Pro and Ultra tiers add capacity for a per-user monthly price.
Visit pen.devThe facts
| Mowgli | pen.dev | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | No | Not published |
| Runs on | API, Web | API, Extension, Linux, Mac, Web, Windows |
| Lowest paid plan | Starter: $12 a month | Pro: $16 per user a month |
| Plans published | 5 | 4 |
| Maker | Not published | Not published |
| Website | mowgli.ai | pen.dev |
| On ai ui design generators | #10 of 22 | #6 of 22 |
Mowgli: what it does well
- Generates UI screens, flows, and states
- Turns designs into interactive prototypes
- Imports from and exports to Figma
- Exports React components and AI-ready packages
- Free plan includes 300 credits
What to know first
- AI features use credits
- Unused credits expire under billing rules
- Real-time collaboration is available on Team
pen.dev: what it does well
- Supports components, variables, themes, scripts and shaders.
- Imports Figma files and HTML; accepts sketches or images.
- Exports to image, document, HTML, CSS and Tailwind formats.
- Connects external agents through MCP and offers an integrated agent.
- The .pen format is open JSON with a fully open schema.
What to know first
- Free tier allows five Agent days per month.
- Free tier limits image and SVG generations to 25 monthly.
- Free tier allows one agent at a time.
- CLI requires Node.js 22.19 or later.
Alternatives to Mowgli Alternatives to pen.dev The whole list