Design Extractor vs Castov

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Design Extractor compared with Castov
Detail	Design Extractor	Castov
What it does	Turn any website into AI-ready design documentation	Fast, 100% client-side developer platform with zero-data logging
Stage	Not given	Not given
Founded	Not given	Not given
Based in	US	Not given
Pricing model	Freemium	Free
Pricing	Free: $0/month with 5 designs per month. Pro: $12/month with 150 designs per month, all export formats, private projects, unlimited downloads, priority queue, and design comparison. Team: $39/month with 1,000 designs per month, everything in Pro plus 5 team members, shared workspace, API access, SSO	All tools are free with no usage limits. The site may show ads in the future to cover running costs.
Key features	Extract color tokens in OKLCH and HEX formats from any public website Generate Tailwind CSS v4 configuration files automatically Generate component library documentation and motion system specifications Create AI-optimized system prompts for Claude Code, Cursor, and Windsurf Support for Figma Tokens and Style Dictionary exports Analyze dark mode and light mode color themes separately Private project storage and confidential generation history	Multi-timezone support with IANA database and daylight saving time JSON to TypeScript conversion JWT decoder and inspection Cron expression parser and generator End-to-end encrypted environment variable vaults P2P multiplayer canvas with WebRTC and CRDT Steganography for hiding encrypted secrets in images Service Worker API mocker for frontend testing Encrypted URL shares with hash fragment storage
What makes it different	Deterministic extraction prevents AI agents from inventing arbitrary colors and fonts, ensuring 100% brand consistency No signup required to generate your first designs Works directly with Claude Code, Cursor, Windsurf, and other AI coding assistants without additional setup All extracted tokens are royalty-free for commercial and agency use Enterprise privacy with zero-retention mode for staging URLs	Zero-data logging: no keystroke sent to external servers, all processing in browser memory 100% client-side operation works entirely offline Unified ecosystem across web, CLI, and AI agents via MCP Server Sub-millisecond performance with local execution Tool chaining and piping for seamless multi-stage workflows
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	12 +1 (up) since last check	1 +1 (up) since last check
Trust Flow (Majestic)	19	1
Citation Flow (Majestic)	6	19
Referring domains (Majestic)	26	7

5 details filled in for both companies.

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