Signal Extractor vs Notedly

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

Signal Extractor compared with Notedly
Detail	Signal Extractor	Notedly
What it does	Summarize any YouTube video or X post in 10 seconds	AI note-taker that converts textbook chapters, articles and YouTube videos into organized study notes
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Free	Freemium
Pricing	Not given	Free: 1 summary with no account, then 10,000 words per month. Premium: $9.99/month or $49.99/year (500,000 words per month, PDFs, images, audio uploads, practice quizzes). Premium Plus: $24.99/month or $129.99/year (1,000,000 words per month, access to deep research).
Key features	Summarize YouTube videos and X posts Key points with timestamps Ask follow-up questions AI-generated summaries from real transcripts Chrome extension Save summaries to account Follow favorite YouTube channels Get summaries by email	Automatic note generation from text, articles and YouTube videos Multiple note styles: standard notes, Cornell notes and outlines PDF, image and audio file uploads Practice quiz generation from notes Word limit tracking and monthly resets Follow-up questions on generated notes
What makes it different	Saves time with ten-second summaries instead of watching full videos Free with no account required Handles both video and social media content Interactive chat to ask follow-up questions about content	First summary free with no account required Saves hours on heavy reading assignments Supports YouTube lectures and videos Designed specifically for students with heavy reading loads
Community votes	0	0
DR (Domain Rating by Ahrefs)	1 −1 (down) since last check	28 no change since last check
Trust Flow (Majestic)	9	11
Citation Flow (Majestic)	22	21
Referring domains (Majestic)	51	156

4 details filled in for both companies.

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