NoteAI is a handy web summarizer — paste a YouTube link, PDF, audio file or webpage and it returns summaries, transcripts, translations and mind maps. HoverNotes is built to take notes while you watch — it follows any video in your browser in real time and captures the on-screen code, equations and diagrams as timestamped screenshots, saved to your own Obsidian vault.
See it in action
HoverNotes sits right beside the video and turns what you watch into AI study notes — automatically, as you learn, capturing the code and diagrams a transcript misses.

Watches the video live and writes structured AI study notes as you go
Captures timestamped screenshots of on-screen code, equations & diagrams
Saves everything privately to your own Obsidian vault
The honest comparison
Both turn video into knowledge. NoteAI summarizes content you paste in across many sources. HoverNotes watches alongside you and captures the visual moments live — saved locally to your own vault.
Compared using each tool's official pricing and product pages, last reviewed June 2026. HoverNotes is independent and not affiliated with the tools listed.
| At a glance | HoverNotes | NoteAI |
|---|---|---|
| Starting price | Free, paid plans available | $4.99/mo (Pro, annual) |
| Free tier | Free, 20 min AI notes | 15 credits, 30-min videos |
| Best for | Video learning | Multi-source summaries |
| Works on | Any browser video + local files | YouTube, PDF, audio, web |
You learn from video — courses, lectures, coding tutorials across YouTube, Udemy, Coursera and 20+ platforms — and want AI study notes plus timestamped screenshots of on-screen code, equations and diagrams, captured live as you watch and saved privately to your own Obsidian vault.
You want a quick web summarizer across many sources — paste a YouTube link, PDF, audio file or webpage and get back a summary, transcript, translation or mind map.
| Feature | HoverNotes | NoteAI |
|---|---|---|
| Watches video live in your browser as you learn | Paste a link or file | |
| Timestamped screenshots of on-screen code, equations & diagrams | ||
| Captures the visual frames (not just transcript) | ||
| Works on any video in your browser, including local files | YouTube + uploads | |
| Local-first — notes stored in your Obsidian vault | Cloud-based | |
| Exports notes to Obsidian (Markdown) | ||
| Multi-source summaries (PDF, audio, webpage) | ||
| Mind maps & insight cards | ||
| Translations across languages | Notes in any language | |
| Usage model | Free + paid plans | Credit-based |
| Free plan to start | 15 credits/mo |
Questions
It depends on how you work. NoteAI is a web summarizer — paste a YouTube link, PDF or webpage and it returns a summary, transcript or mind map from the content. HoverNotes follows the video with you in real time across YouTube, Udemy, Coursera and 20+ platforms, captures timestamped screenshots of on-screen code, equations and diagrams, and saves AI study notes to your Obsidian vault. For taking notes while you actually watch, HoverNotes is purpose-built.
NoteAI is a credit-based web tool that summarizes content you paste in — videos, PDFs, audio and webpages — into notes, transcripts, translations and mind maps. HoverNotes watches the video live as it plays, grabs timestamped screenshots of the code and diagrams the moment they appear on screen, and writes structured notes straight to a local Obsidian vault.
NoteAI works from the transcript of a video you paste in, so the on-screen code, equations and diagrams aren't saved as images — it returns text summaries and mind maps. HoverNotes follows the video as it plays and grabs exactly those visual moments as timestamped screenshots, which is what makes it strong for coding tutorials and diagram-heavy lectures.
NoteAI is credit-based: a free tier with 15 credits a month and 30-minute video limits, then Pro around $4.99/month and Unlimited around $8.33/month billed annually. HoverNotes is free to install, and its Free Starter includes 20 minutes of AI notes plus unlimited manual notes, screenshots and timestamps. HoverNotes is also local-first: your notes live in your own Obsidian vault, not a cloud credit balance.
Choose NoteAI if you want a quick web summarizer across many sources — paste a YouTube link, PDF, webpage or audio file and get a summary, transcript, translation or mind map. Choose HoverNotes if you learn from video and want notes and screenshots captured automatically as you watch, across 20+ platforms, and saved privately to your own Obsidian vault.
Join 20,000+ learners turning every course, lecture, and tutorial into AI study notes they keep — captured automatically and saved to their own Obsidian vault.
Free Starter includes 20 minutes of AI notes • Upgrade anytime