Skip to content
effecthub

Aster Lab vs Eightify

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. Eightify publishes a starting price ($4.99); Aster Lab does not. Only Aster Lab is free.

Aster LabTurns a YouTube video or PDF into a summary, quiz, and flashcardsEightifyBrowser extension that turns a YouTube video into a timestamped summary and full transcript

Side by side

FactAster LabEightify
CategoryStudy Tools & FlashcardsYouTube Tools
Pricing modelFreePaid
Starts at—$4.99 month
Public APINoNo
PlatformsWebWeb, Chrome Ext
Company—Rational Expressions Inc.
Launched—2023
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

Eightify

A narrow tool that does one job well: decide whether an hour-long video is worth an hour before you spend it. The timestamped key points are the real feature, because they let you jump straight to the section you actually needed. The catch is that it is subscription-only for a job several free extensions and general assistants now also do.

Pros

  • Key points come with clickable timestamps, so the summary doubles as navigation
  • Handles very long recordings rather than capping at a few minutes
  • Output available in roughly 40 languages, including summarising an English video into another language
  • Works inline on the YouTube page instead of asking you to paste URLs elsewhere

Cons

  • No permanent free tier — after the trial it is pay or nothing
  • Summary quality is bounded by YouTube's auto-captions, which are poor on accented or technical speech
  • The vendor blocks automated access to its own site, so pricing and terms are hard to verify independently

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 Eightify if you need

  • Skimming long conference talks, lectures or interviews before committing time
  • Pulling a rough transcript out of a video for notes or quoting
  • Watching material in a language you read better than you listen to

More comparisons

Browse all Study Tools & Flashcards →