The short version
Glasp is a knowledge-management tool first, video summarizer second. You highlight articles, save them, share them publicly, browse what other people highlighted. It's a social library with AI summaries attached. Large installed base (1-2M+ users), recently raising prices.
Ravenote is a study tool, period. It captures Udemy and YouTube transcripts, generates structured notes, and quizzes you via spaced repetition. No social layer, no highlighting of web articles. Just: learn, capture, review, remember.
If you're building a personal knowledge library across many content types and want a social angle, Glasp. If you're actively studying courses and want to remember them, Ravenote.
Feature comparison
| Ravenote | Glasp | |
|---|---|---|
| YouTube summaries | ✓ | ✓ |
| Udemy support | ✓ | — |
| Web article highlighting | — | ✓ |
| Social / public sharing of highlights | — | ✓ |
| Spaced-repetition quiz system | ✓ | — |
| Course-aware note organization | ✓ | — |
| Multi-model AI (GPT / Claude / Gemini) | ✓ via OpenRouter | ✓ built-in |
| Markdown export | ✓ | ✓ |
| Lifetime pricing | $9 once | — |
| Subscription | $5/mo (optional) | Required for Pro (rising May 2026) |
| BYOK option | ✓ | — |
| Free tier | 3 lectures/day with your key | Limited quota |
| Data stays on your device | ✓ | Server-stored |
Why the overlap is narrower than it looks
Glasp's pitch is: "build your second brain from everything you read and watch on the web." Highlights on articles, podcasts, YouTube, all in one library, searchable, shareable. That's a knowledge-management posture.
Ravenote's pitch is: "actually remember what you learned." Not a library. A retention system for one specific context: video courses.
These tools don't fight over the same hour of your day. You might reasonably use both — Glasp for saving great articles, Ravenote for the Udemy course you're working through. They're not substitutes in most cases. They're both "AI + learning" tools but built for different parts of the same workflow.
Worth knowing: If you exported your Ravenote notes to Markdown and dropped them into Glasp as text entries, or vice versa, the workflow would be clunky. Both tools are designed for their own ingestion flow. Pick one primary, don't try to make them peers.
Where Glasp is genuinely better
Scope. Glasp highlights across articles, YouTube, PDFs. If you want one library that captures everything you consume, Ravenote doesn't compete. Ravenote is video-learning only.
Social / discovery. Glasp lets you see what other people highlighted on the same article. You can follow people whose taste you trust and mine their highlights. Ravenote has nothing like this by design — notes are private, for you.
Installed base. 1-2 million users vs Ravenote's days-old launch. If longevity of the tool matters (reasonable!), Glasp has the track record.
Built-in multi-model switching. Glasp lets you pick among GPT-4, Claude, Gemini, Mistral in-app without configuring an API key. Ravenote requires you to set that up via OpenRouter (free, but one extra step).
Where Ravenote is genuinely better
Udemy support. Glasp doesn't do Udemy. If you take Udemy courses, Glasp is not the tool — Ravenote is the only one in this comparison that covers both platforms.
Retention-first design. Glasp saves your highlights. Ravenote asks you about them later. The Mastery system tracks each concept through learning stages and surfaces what you've forgotten. Highlight-library tools don't solve the forgetting problem, they just give you a nicer graveyard.
Course structure awareness. Ravenote knows your Udemy course has Section 1 Lecture 4 and Section 2 Lecture 11, and organizes your notes accordingly. Glasp treats each video as a flat highlight destination.
Pricing and ownership. $9 Lifetime, BYOK key, data in your browser, Markdown export. Glasp is a subscription service with server-stored data and rising prices. Different deal.
Simplicity of focus. Glasp does a lot, which means navigating a lot. Ravenote does one thing (capture → notes → quiz → review) and the UI reflects that. If you're mid-course and want zero friction, fewer options helps.
Which user should pick which
Pick Glasp if:
- You highlight a lot of articles and want them unified with YouTube summaries
- You like the social / community angle
- You don't use Udemy
- You want an established tool with a large user base
Pick Ravenote if:
- You're actively working through courses (Udemy or YouTube tutorials) and want to remember them
- You want spaced-repetition quizzes, not just highlights
- You prefer pay-once over subscription
- You want your notes under your control on your own device
Try Ravenote free for 3 lectures a day
Or pay $9 once, forever. Works on Udemy and YouTube. Captures transcripts, generates structured notes, quizzes you on what actually matters.
Install Ravenote for FreeFrequently asked questions
Does Glasp work on Udemy?
Glasp is primarily a web-highlighting tool with YouTube summary support. It does not officially support Udemy lecture transcripts. Ravenote specifically covers Udemy + YouTube with the same Mastery system across both.
What's the social layer Glasp advertises?
Glasp lets you share your highlights publicly and browse other users' saved content. It leans into the "learn alongside a community" idea. Ravenote is private by design — notes stay in your browser, you share them by choice via Markdown export.
How much does Glasp cost?
Glasp has a free tier that covers basic highlighting and a limited number of YouTube summaries. Pro pricing is increasing as of May 2026. As with most subscription tools, the cost compounds annually — unlike Ravenote's $9 one-time Lifetime option.
Which tool is better for structured courses?
Ravenote. It understands that Udemy courses have sections and lectures, and organizes your notes as a tree by curriculum position. Glasp treats each video as a standalone item with associated highlights — no course-level hierarchy.
Is Glasp better for casual content consumption?
If your goal is highlighting articles plus occasional YouTube summaries to build a personal knowledge library, Glasp's broader scope fits that. Ravenote is narrower — it's built for people actively studying, not general knowledge management.
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