Volley vs YouTube Transcript Pro

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

Volley compared with YouTube Transcript Pro
Detail	Volley	YouTube Transcript Pro
What it does	API sequence diagram tool with payloads on every arrow	Free YouTube transcript downloader for videos, playlists, and entire channels
Stage	Not given	Startup
Founded	Not given	2026
Based in	Not given	GB
Pricing model	Freemium	Freemium
Pricing	Free: editor, local diagrams, share links, SVG and PNG export, CLI, 3 saved diagrams, HAR imports up to 8 requests, 200 hosted API and MCP calls a month, 1 webhook inbox with 25 requests a month, 1 recording link with 3 recordings. Pro: $9/month or $90/year (billed in advance), up to 1,000 saved dia	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
Key features	Plain-text sequence diagram editor with real-time rendering Request and response payloads displayed on every arrow HAR file import with automatic redaction of secrets Webhook inbox to capture and diagram provider deliveries Recording links to collect customer HAR files as diagrams Drift Check to update diagrams when APIs change SVG and PNG export for sharing and embedding AI agent support via MCP server, HTTP API and CLI README embeds that update when diagrams are edited Presentation mode for step-through walkthroughs	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
What makes it different	No account needed to write and share diagrams AI can write diagrams from plain-text syntax Built from real traffic: HAR files, webhooks and customer recordings	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
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)	3 no change since last check	2 +1 (up) since last check
Trust Flow (Majestic)	3	4
Citation Flow (Majestic)	22	17
Referring domains (Majestic)	8	14

5 details filled in for both companies.

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