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FNJ vs Castov

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

FNJ compared with Castov
DetailFNJ logo FNJCastov logo Castov
What it doesNot given Fast, 100% client-side developer platform with zero-data logging
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelPaid Free
PricingFNJ Lifetime: $29 USD (one-time payment, ends November 1, 2026). AI Builder: $25 USD per month (60 credits/month), Agency plan $99 USD per month (250 credits/month), Site Pack $29 USD once (50 credits), credit top-ups $10 USD for 20 credits. All tools are free with no usage limits. The site may show ads in the future to cover running costs.
Key features
  • Convert Framer sites to Next.js with named React components
  • Export optimized static HTML bundles
  • WebP image optimization and conversion
  • SEO pass on every conversion
  • Multi-page and responsive breakpoint support
  • One-click deploy to Vercel or Cloudflare
  • Built-in visual editor for converted code
  • MCP server for Claude, Cursor or Codex integration
  • CMS with unlimited collections and publishable items
  • AI website builder for creating new sites
  • 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
  • Own your code and host it anywhere, no vendor lock-in
  • One-time payment for lifetime unlimited conversions, not a subscription
  • Maintains 100% visual parity with original Framer design
  • Improves Lighthouse accessibility scores by default
  • Ships new features most days with active development
  • 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 planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)8 no change since last check1 +1 (up) since last check
Trust Flow (Majestic)41
Citation Flow (Majestic)2719
Referring domains (Majestic)317

4 details filled in for both companies.

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