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Cairn

ExtensionEducation
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Overview

Finally Finish YouTube Courses

Cairn is a Chrome extension for people working through university lecture series on YouTube — Stanford CS, MIT OCW, and the rest. — Tracks your progress automatically, to the second. No buttons to click. — Syncs across devices when you sign in with Google. — Shows short notes left by other learners at the exact moment they posted them. — Notes are anchored to a second in the lecture, not threaded into a chat. — Anonymous nicknames. — Community-curated course catalog. — Anyone can add a course from YouTube playlist. — Works fully offline as a guest. Migrate to an account later.

Details

  • Version
    1.0.0
  • Updated
    April 28, 2026
  • Offered by
    Chaimantec
  • Size
    107KiB
  • Languages
    English
  • Developer
    Email
    support@chaimantec.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization

Cairn has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.

Cairn handles the following:

Authentication information
Web history
User activity

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes
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