AI Undetectable vs Quick Viral Notes

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

AI Undetectable compared with Quick Viral Notes
Detail	AI Undetectable	Quick Viral Notes
What it does	Check AI-likelihood, humanize robotic passages, and review meaning with an undetectable AI writing workflow built for careful editing.	Turn Substack articles into viral social posts
Stage	Not given	Startup
Founded	Not given	2025
Based in	Not given	Not given
Pricing model	Freemium	Freemium
Pricing	3-day free trial. Basic plan: $5.00/month (10,000 credits/month, charged annually at $60.00). Pro plan: $9.50/month (20,000 credits/month, charged annually at $114.00). Business plan: $15.75/month (35,000 credits/month, charged annually at $189.00). Basic uses 1 credit per input word; Stealth uses 2	Free: 10 credits (one-time). Monthly: $7/mo for 70 credits. Yearly: $65/yr for 600 credits.
Key features	Support for five languages: English, Spanish, French, German, and Portuguese Side-by-side comparison of original and rewritten versions Preserves facts, names, numbers, and important claims during rewriting API-ready access on Business plan Priority rewriting access on Business plan	TYPE-FORMULA pipeline that extracts insight types (diagnostic, wisdom, contrarian, data-backed, framework, story) and applies viral structures Knowledge Bank to store, browse, and reuse extracted insights 10+ viral formula structures including parallel repetition, conditional framework, and bridge analogy Chrome extension for scheduling posts directly to Substack Rich-text editor with HTML and plain text export MCP integration for Claude and Cursor Automatic article URL processing from published or draft posts Priority processing for paid plan users
What makes it different	Combines detector, humanizer, and review tools in one workspace instead of switching between disconnected tools Rebuilds paragraph structure and sentence rhythm rather than just replacing words Treats detector scores as review signals rather than guaranteeing bypass of detection Published benchmark showing both successful and failed rewrites for transparency Money-back guarantee if rewritten text is flagged as not human	Designed specifically for Substack writers with formulas trained on viral patterns Two-stage TYPE-FORMULA process instead of generic AI summarization Knowledge Bank compounds over time as more articles are processed From URL to scheduled post in minutes with no copy-paste needed Credits never expire at your own publishing pace
Community votes	0	0
DR (Domain Rating by Ahrefs)	9 no change since last check	10 +2 (up) since last check
Trust Flow (Majestic)	6	0
Citation Flow (Majestic)	30	15
Referring domains (Majestic)	77	5

5 details filled in for both companies.

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