Master what you
watch.

Don't just consume content. Capture it. MensorAI transforms your YouTube history into an active knowledge base, helping you build a personal library of wisdom that actually sticks.

No friction Chrome Extension Free forever

Intentional Learning

Stop doomscrolling. Start accumulating wisdom with purpose.

AI-Powered Learning

Unlock AI chat, speed mode, and semantic search with Premium.

Clarity Over Clutter

A curated library, not a messy watch history.

Actionable Knowledge

Transform vague ideas into concrete next steps.

The Method

01

Save a Video

Paste a URL or use the extension. Open the sidebar to start capturing your insights.

02

Capture Insights

Use the rich text editor to capture key points. Ask AI questions about the video to deepen your understanding.

03

Build Your System

Your insights are indexed into a searchable second brain. Never forget again.

Learn from the Community

Discover public lessons shared by other learners.

Browse Public Lessons
Chrome Extension

Take notes and ask AI without leaving the video.

The MensorAI sidebar overlays directly on YouTube with a rich text editor and AI assistant. Capture insights, ask questions about the video, and sync everything to your library instantly.

What insight do you want to capture?|

Why MensorAI?

Stop losing insights to scattered bookmarks and forgotten notes.

FeatureWatch LaterNotion/ObsidianMensorAI
Save videos
Take notes
AI assistance
Timestamp linking
Quiz yourself
Community lessons
...
Public lessons shared
Growing
Community of learners

Pricing

Free

$0/mo
  • Save unlimited videos
  • Rich text note-taking
  • Track action items
  • Organize with tags
  • Share public lessons
  • Learning analytics
Start for Free
Most Popular

Premium

$8.25/mo
BILLED ANNUALLY • $99/YR
  • Everything in Free
  • Speed Mode (master videos fast)
  • AI Video Chat (ask anything)
  • AI Socratic Questions
  • Ask Your Library (semantic search)
  • 100 AI requests/day

Try Speed Mode free on your first video

Frequently Asked Questions

What happens to my notes if I cancel Premium?

All your videos, notes, and insights stay with you forever. You just lose access to AI features like Speed Mode, Video Chat, and semantic search. You can still view and edit everything you've created.

Does it work with other video platforms?

Currently MensorAI is optimized for YouTube. We're focused on doing one thing exceptionally well. Support for other platforms may come in the future based on community demand.

Is my data private?

Yes. Your notes are private by default. Only lessons you explicitly choose to publish become visible to the community. We never share or sell your data.

What's the difference between free and premium AI?

Free users get 3 AI requests per day. Premium unlocks 100 requests/day plus Speed Mode (briefing, quiz, evaluation, notes in one flow), Video Chat, and semantic search across your entire library.

Early Access

A note from the builder

I spent years watching educational content, feeling productive, but retaining almost nothing a week later. The gap between consumption and understanding was frustrating.

I built MensorAI to close that gap. It is not designed to optimize your engagement metrics. It is designed to optimize your retention.

This is a tool for the intentional learner. The person who watches to understand, not just to kill time.

R
Rouven
Founder

Start Retaining What You Watch.

Turn your watch history into real progress today.