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Castov vs BuildFerry

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

Castov compared with BuildFerry
DetailCastov logo CastovBuildFerry logo BuildFerry
What it doesFast, 100% client-side developer platform with zero-data logging Install iOS builds on any iPhone with one link
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFree Freemium
PricingAll tools are free with no usage limits. The site may show ads in the future to cover running costs. Free: $0 forever (1 app, 2 stored builds per app, builds up to 200 MB). Solo: $12/month (5 apps, 10 stored builds per app, builds up to 1 GB, or $120/year with two months free). Pro: $29/month (20 apps, 30 stored builds per app, builds up to 2 GB, or $290/year with two months free).
Key features
  • 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
  • UDIDs collect automatically via one-time profile approval in Safari
  • Cloud signing with no Mac or Xcode required
  • Approval controls before testers can install
  • PIN, expiry date and auto-approve options for share links
  • Real certificate profiles showing Verified status in iOS
  • Displays your current iPhone registration count against Apple's 100-device limit
  • Encrypted Apple key stored at rest and deleted after each signing job
  • One permanent share link per app that works for all new testers
  • Builds up to 1 GB on Solo and 2 GB on Pro plans
What makes it different
  • 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
  • No UDID hunting required; testers approve with one tap in Safari
  • One link per app stays live and re-signs automatically for new testers, unlike services that require rebuilding
  • Direct iOS installation from Safari with no TestFlight app or Beta App Review delay
  • Auto-registers new device UDIDs and re-signs builds instantly in the cloud
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)1 +1 (up) since last checkNot checked yet no change since last check
Trust Flow (Majestic)10
Citation Flow (Majestic)190
Referring domains (Majestic)70

5 details filled in for both companies.

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