YouTube Transcript Pro vs Castov

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

YouTube Transcript Pro compared with Castov
Detail	YouTube Transcript Pro	Castov
What it does	Free YouTube transcript downloader for videos, playlists, and entire channels	Fast, 100% client-side developer platform with zero-data logging
Stage	Startup	Not given
Founded	2026	Not given
Based in	GB	Not given
Pricing model	Freemium	Free
Pricing	Free Tier: 10 credits/month (no credit card required, +5 bonus credits when registering). Starter Pack: $4/month for 500 credits ($0.008/credit). Creator Pack: $9/month for 1,200 credits ($0.0075/credit). Pro Pack: $19/month for 3,000 credits ($0.0063/credit). All paid plans include monthly credit r	All tools are free with no usage limits. The site may show ads in the future to cover running costs.
Key features	Single video transcript extraction Bulk playlist and channel extraction Multiple export formats (TXT, JSON, SRT, PDF, Markdown) LLM-ready format optimized for AI Timestamp synchronization Multi-language caption translation SRT subtitle export for video editing No YouTube API key required Parallel batch processing Include or exclude timestamps in downloads	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	10 free credits every month, no credit card required Fast extraction: single videos in 5 seconds, 1000-video channels in 1-2 minutes No API setup or technical configuration needed Zero data retention and no third-party selling of usage logs Multiple download formats including LLM-optimized for AI	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)	2 +1 (up) since last check	1 +1 (up) since last check
Trust Flow (Majestic)	4	1
Citation Flow (Majestic)	17	19
Referring domains (Majestic)	14	7

5 details filled in for both companies.

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