Turbo AI (formerly TurboLearn) is a great study kit — upload a PDF, paste a YouTube link or record a lecture and it spins up notes, flashcards, quizzes and AI podcasts. 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 help students learn faster. Turbo AI turns uploads and recordings into a flashcard-and-quiz study kit. HoverNotes watches alongside you and captures the visual moments — 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 | Turbo AI |
|---|---|---|
| Starting price | Free, paid plans available | ~$14.99/mo (annual) |
| Free tier | Free, 20 min AI notes | Free, capped quotas |
| Best for | Video learning | Flashcards & quiz revision |
| Works on | Any browser video + local files | Uploads + recordings |
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 study mainly from PDFs and recorded lectures and want them turned into flashcards, quizzes and two-host AI podcasts for exam revision, synced across web and mobile.
| Feature | HoverNotes | Turbo AI |
|---|---|---|
| Watches video live in your browser as you learn | Upload or record | |
| 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 | Uploads + recordings | |
| Local-first — notes stored in your Obsidian vault | Cloud-based | |
| Exports notes to Obsidian (Markdown) | ||
| Flashcards, quizzes & practice questions | ||
| Two-host AI study podcasts | ||
| Mobile apps (iOS / Android) | ||
| Free plan to start | Capped quotas |
Questions
It depends on how you study. For taking notes while you actually watch a video, HoverNotes is purpose-built: it follows any video in your browser 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. Turbo AI is the stronger choice if you want to upload PDFs and recorded lectures and turn them into flashcards, quizzes and AI podcasts for exam revision.
Turbo AI (formerly TurboLearn) is an upload-and-record study tool — you feed it a PDF, a YouTube link or a recorded lecture and it generates notes, flashcards, quizzes and a two-host AI podcast. HoverNotes watches the video with you live as it plays, captures timestamped screenshots of the code and diagrams the moment they appear on screen, and writes AI study notes straight to a local Obsidian vault.
Turbo AI works from the transcript of an uploaded video or recording, so the on-screen code, equations and diagrams aren't saved as images. HoverNotes follows the video as it plays and grabs exactly those moments as timestamped screenshots — which is what makes it strong for coding tutorials and diagram-heavy lectures where the transcript alone misses the visuals.
Turbo AI has a free tier with capped quotas, with the unlimited plan running roughly $14.99–$19.99/month (cheaper annually). HoverNotes is free to install, with paid plans for heavier use, 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 rather than a cloud account.
Choose Turbo AI if you mainly study from PDFs and recorded lectures and want them turned into flashcards, quizzes and AI podcasts for exam revision. Choose HoverNotes if you learn from video and want notes and screenshots captured automatically as you watch — across 20+ platforms and local files — 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