Comparing Notion and Obsidian for notes on YouTube videos. Both are general-purpose tools, and neither saves the moment you’re watching or reads the captions. Here’s how they compare, and where MensorAI fits if you write from what you watch and read.
Last reviewed: October 2026. The MensorAI team wrote this comparison. We try to be fair and accurate, and we’d encourage you to try both tools.
MensorAI started as a YouTube note-taking tool for learners. Now it saves articles, passages and YouTube moments as you go, and when you sit down to write, you ask across all of them. Every answer links back to the passage it came from.
| Feature | Notion | Obsidian | MensorAI |
|---|---|---|---|
| Saves the YouTube moment you’re watching | |||
| Chrome extension for YouTube | |||
| AI Q&A about video content | Plugin | ||
| Timestamped notes | Manual | Plugin | |
| Markdown export | |||
| Knowledge graph | |||
| Database features | |||
| Local-first storage | |||
| Real-time collaboration | |||
| Free tier available | Saving is free |
Pick Notion if you work with a team or want databases for everything. Pick Obsidian if you want local Markdown files you own and like linking notes by hand. Both need workarounds for YouTube, because you paste links and timestamps yourself. If your notes feed a newsletter, article or script, MensorAI saves the moment and the article from your browser, lets you ask across what you saved, and exports cited findings as Markdown you can paste into either one.
MensorAI is for writers and creators who research newsletters, articles and scripts from what they read and watch. It doesn’t write the piece for you, and it has no summaries, flashcards or spaced repetition.
Pick Notion if you work with a team or want databases for everything. Pick Obsidian if you want local Markdown files you own and like linking notes by hand. Both need workarounds for YouTube, because you paste links and timestamps yourself. If your notes feed a newsletter, article or script, MensorAI saves the moment and the article from your browser, lets you ask across what you saved, and exports cited findings as Markdown you can paste into either one.
It depends on what the notes are for. If you write newsletters, articles or scripts, MensorAI saves the YouTube moment you’re watching with the captions around it, plus articles and passages, from a browser extension. You ask across everything you saved, and every claim links to the passage it came from. It has no summaries, flashcards or spaced repetition, and it doesn’t write the piece for you.
Saving sources is free. Asking and finding videos on YouTube need an active trial or a paid plan. You get a 7-day free trial of Pro features with a limited AI allowance. No credit card required. After that, plans are $9, $19 or $22 a month, and they differ only in how many AI requests you get per day.