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Aster Lab vs NoteGPT

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. NoteGPT publishes a starting price ($9); Aster Lab does not. Both have a free tier.

Aster LabTurns a YouTube video or PDF into a summary, quiz, and flashcardsNoteGPTSummarizes YouTube videos, lectures and PDFs into notes, flashcards, mind maps and study aids

Side by side

FactAster LabNoteGPT
CategoryStudy Tools & FlashcardsStudy Tools & Flashcards
Pricing modelFreeFreemium
Starts at—$9 month
Public APINoNo
PlatformsWebWeb, Chrome Ext
Last verifiedSep 1, 2026Sep 6, 2026

What our research says

Aster Lab

Aster Lab is handy for converting a long YouTube lecture into something you can actually study from, but the lack of any visible pricing, company name, or team page is worth pausing on for a tool that expects people to upload PDFs and link personal video sources. Treat it as an unverified free tool rather than a service to trust with sensitive documents.

Pros

  • Generates summary, quiz, and flashcards from one input
  • Accepts both YouTube links and PDF uploads
  • No account or payment required to try it

Cons

  • No company name, team, or location published anywhere
  • No stated pricing beyond an optional Patreon link
  • No API or platform beyond the web app

NoteGPT

A cheap way to compress videos and readings into study material, with a usable free tier to test output quality. The catch is that everything meaningful is metered — even the plan named Unlimited caps premium credits — and the many bundled tools vary in depth.

Pros

  • Free tier without a credit card to evaluate quality
  • Covers the whole pipeline from summary to flashcards to audio in one subscription
  • Browser extension summarizes videos in place on YouTube
  • Entry price of $9/month undercuts buying separate single-purpose tools

Cons

  • Credit and quota system applies across nearly every feature
  • Quality is uneven across its dozens of mini-tools
  • The company publishes no information about who runs it or where

Which one fits

Choose Aster Lab if you need

  • Students turning a single lecture video into a quiz for review
  • Casual use converting a PDF into flashcards

Choose NoteGPT if you need

  • Students turning lecture videos and readings into notes and flashcards
  • Researchers triaging long YouTube videos and PDFs before deep reading
  • Educators producing quizzes and study aids from existing material

More comparisons

Browse all Study Tools & Flashcards →