YiNote is a simple extension for timestamped notes on videos. It hasn’t been updated since July 2024, and its website, yinote.co, is now a parked domain. If you want a YouTube note tool that’s still maintained, MensorAI is one option.
Last reviewed: October 2026. We make MensorAI, so we're biased. We've tried to be fair about YiNoteand to say where it's the better pick. Try both if you can.
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.
These are the things to know if you collect videos and articles to write from.
MensorAI saves your sources as you read and watch. When you write, you ask across all of them, and every claim links to the passage it came from.
MensorAI is in active development, and the extension works in Chrome, Edge, Brave and Arc.
Everything you save is in your MensorAI account. Clearing your browser data doesn’t touch it, and you can open your library in any browser where you sign in.
Ask a question across every video and article you saved. Answers come from the captions and your notes, and each claim links to the moment it came from when the captions have timestamps.
The extension also saves articles and the passages you select, and Ask searches them together with your videos.
See how MensorAI and YiNote compare feature-by-feature.
If it still works for you and your notes are backed up, there’s no rush to switch. YiNote does things MensorAI doesn’t: screenshots, notes on video sites other than YouTube, and a free community edition. But its Chrome extension was last updated in July 2024 and yinote.co is now a parked domain, so don’t count on its hosted sync.
There’s no import from YiNote or other note apps. Save the videos you still care about again and paste the notes you want to keep into the note field.
Saving 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.
Saving is free, and there's a 7-day free trial of Pro features with a limited AI allowance. No credit card required. Keep using YiNoteand try MensorAI on the next thing you're writing.