Free AI flashcard and study tools for students
Free AI flashcard and study tools for students
Roten.X DevTool: Organizes notes and summarizes online video lectures directly inside Chrome, but offers a simpler feature set. HoverNotes records 190,686 monthly visits with +156% month-over-month growth and Freemium pricing. Roten.X DevTool records 0 monthly visits with — growth and Freemium pricing.

AI notes, video simplification and highlights, all in one Chrome sidebar
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | hovernotes.io | chromewebstore.google.com |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 190.69K (190,686) | 0 (0) |
| MoM Traffic Delta | +116.19K (+156%) | 0 (—) |
| Primary Market & Share | 🇮🇳 India (51.3%) | 🌐 Global (—) |
| Direct Visits / mo | 94.19K | 0 |
| User Rating | 4.3 | 4 |
| Supported Platforms | Website | Browser Extension |
AI that watches your video and writes study notes as you watch
Captures code, equations, diagrams and slide content exactly as they appear, so notes are complete even on videos with no captions.
Generates headings, bullets and syntax-highlighted code blocks that drop straight into an Obsidian vault or any Markdown editor.
One click adds the current frame to your notes at the right timestamp, ideal for diagrams, demos and UI walkthroughs.
Listen to a speaker in your own language while the video stays in sync, and ask Hovie to explain or summarise any moment using your notes and screenshots.

AI notes, video simplification and highlights, all in one Chrome sidebar
While a lecture plays, Roten.X DevTool records structured, time-linked notes so you can jump back to the exact moment a concept was explained.
Long or jargon-heavy videos get rephrased into short, readable explanations, surfacing the arguments and definitions that matter for an exam or assignment.
Bookmark and highlight the important moments of a video, then return to them instantly instead of scrubbing through the whole timeline again.
Capture diagrams, slides and equations straight from the page, annotate them, and store them alongside your written notes.
Free AI flashcard and study tools for students
Free AI flashcard and study tools for students
SpecialistIntegrates frontier chat models into a versatile browser sidebar for on-page summarization, but lacks automated video-watching workflows.
SpecialistIntegrates frontier chat models into a versatile browser sidebar for on-page summarization, but lacks automated video-watching workflows.
Turn any material into notes, flashcards, quizzes, and podcasts.
Highlight the web, learn in public, and build your AI clone
Highlight the web, learn in public, and build your AI clone
Turn any lecture, file, or video into notes, flashcards, and quizzes
Turn any lecture, file, or video into notes, flashcards, and quizzes

Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
SpecialistProvides fast webpage summarization and bookmark management from a browser sidebar, but is less tailored to video-heavy online courses.
SpecialistProvides fast webpage summarization and bookmark management from a browser sidebar, but is less tailored to video-heavy online courses.

Summarize any YouTube video into key ideas and timestamped notes in seconds.
Summarize any YouTube video into key ideas and timestamped notes in seconds.
AI summaries that turn long YouTube videos into key ideas in seconds
AI summaries that turn long YouTube videos into key ideas in seconds
Turn any YouTube video into a one-minute digest
Turn any YouTube video into a one-minute digest
SpecialistScreenshot any question, get instant AI answers
SpecialistScreenshot any question, get instant AI answers

Transcribes, summarizes, and enables interactive chat with video files, but requires more manual file handling than HoverNotes.
Transcribes, summarizes, and enables interactive chat with video files, but requires more manual file handling than HoverNotes.