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Glasp vs Summarify

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors.

The short answer

Free plan
Both — Glasp has a free plan, Summarify is free to use
Public API
Glasp has one; not confirmed by us for Summarify
Higher Trust score
Summarify — 86 vs 76 for Glasp
Best fit
Glasp: Students and researchers collecting cited passages across the web and PDFs · Summarify: Students screening lecture videos before watching them in full
Platforms
Glasp: Web, Chrome extension, iOS, Android · Summarify: iOS, macOS, Chrome extension

From our own records as of each tool's last check. Anything we have not confirmed is left out rather than guessed. How we verify

GlaspHighlighter for web pages, PDFs, YouTube and Kindle that collects your passages in one library and lets you chat with them.SummarifyTurns YouTube videos into short AI summaries you can read, search, and export instead of watching.

Side by side

FactGlaspSummarify
CategoryNote-taking & Second BrainSummarization
Pricing modelFreemiumFree
Starts at$12.50/mo—
Public APIYesNot confirmed
Trust score76 / 10086 / 100
PlatformsWeb, Chrome extension, iOS, Android, APIiOS, macOS, Chrome extension
CompanyGlasp Inc.Digital Tools Ltd
Launched2021—
Last verifiedOct 29, 2026Oct 15, 2026

What our research says

Glasp

Glasp fits students, researchers and writers who read a lot online and want every quote kept with its source and searchable later. People who want their reading private by default, or who mostly need a full note editor rather than a highlighter, should look elsewhere.

Pros

  • Free plan keeps unlimited highlighting plus exports and Notion sync
  • Works across Chrome, Safari, Edge, Brave, Firefox, Opera and mobile
  • Each highlight keeps its source metadata, so quotes stay cited
  • MCP connector and API make the library usable from other AI tools

Cons

  • Highlights are public by default; privacy is a paid feature
  • Free AI allowances are small, especially video summaries
  • Social feed is of limited use to people who read alone

Summarify

Good for turning long YouTube videos into a quick skim before deciding whether to watch, and the timestamp links make it easy to jump back into the source video. The catch is it depends entirely on YouTube's own captions, so videos without decent transcripts get thin summaries.

Pros

  • Multiple summary formats (bullet points, detailed, chapter-based)
  • Timestamps link directly back into the video
  • Exports to PDF, Markdown, and plain text
  • Works from the iOS/macOS share sheet without leaving YouTube

Cons

  • No web app, only iOS, Mac, and a Chrome extension
  • Summary quality depends on the video's existing captions
  • No pricing page, so it's unclear what, if anything, sits behind a paywall

Which one fits

Choose Glasp if you need

  • Students and researchers collecting cited passages across the web and PDFs
  • Writers keeping a swipe file of quotes for drafting with ChatGPT or Claude
  • Readers who want Kindle and web highlights in one library

Choose Summarify if you need

  • Students screening lecture videos before watching them in full
  • Researchers skimming long interviews
  • Anyone who wants a written record of a video's content

Glasp vs Summarify: the questions people ask

Is Glasp cheaper than Summarify?

Summarify is free to use; Glasp starts at $12.50/mo.

Does Glasp or Summarify have a free tier?

Both: Glasp has a free tier, and Summarify is free to use.

Which has a public API, Glasp or Summarify?

Glasp ships a public API, as of our last verification. A public API for Summarify is not confirmed by us — check its developer docs before you plan an integration.

More comparisons

All Summarify alternatives →Browse all Note-taking & Second Brain →