Free AI Tool for Students
Turn Lecture Recordings into Notes, Flashcards & Quizzes
Create a free account or sign in to record or upload a lecture and save your notes. Record up to 120 minutes per session; uploads can be up to 120 minutes and 200 MB per file.
Sign up or sign in to record lectures or upload audio up to 120 minutes and 200 MB. Save AI lecture notes, then generate flashcards and quizzes.
Sign up or sign in to record a lecture or upload supported lecture audio in HyNote. Uploads accept MP3, WAV, M4A, FLAC, WebM, and MP4, up to 200 MB per file and 120 minutes per recording. Live recording sessions are also limited to 120 minutes on all plans. HyNote generates a transcript and structured lecture notes saved in your notebook. After your notes are ready, generate flashcards or a quiz. Transcription supports 50+ languages with up to 99% accuracy for clear speech. High-accuracy speaker identification is available on Plus and Unlimited. Works for in-person lectures, online classes, and recorded lectures. Trusted by 1M+ users worldwide.
What is Lecture to Notes?
Lecture to Notes is the process of converting a recorded lecture into structured study materials using AI. Instead of frantically writing notes during class or rewatching a 2-hour recording before exams, you record the lecture and the AI produces a complete set of study materials — transcript, notes, summary, flashcards, and quizzes — automatically.
The technology combines real-time speech recognition with speaker diarization (to distinguish professors from students) and language model analysis (to extract key concepts and generate study materials). HyNote processes lectures on web, mobile, and Apple Watch, so students can record in any setting — a large lecture hall, a small seminar room, or an online class on Zoom.
What makes lecture-to-notes different from generic audio transcription is the study-oriented output. A transcript tells you what was said. Lecture notes tell you what matters. Flashcards and quizzes help you verify you actually learned it. The entire workflow is designed for students who need to go from 'attended class' to 'ready for the exam' in the shortest possible time.
How to get notes from a lecture
Record or upload the lecture
Create a free account or sign in, then choose Record a lecture or Upload lecture audio. Live recordings can be up to 120 minutes per session. Uploads accept MP3, WAV, M4A, FLAC, WebM, and MP4, up to 200 MB and 120 minutes per file. Allow microphone access for live recording. HyNote returns you to the selected action after signup; choose your file after signing in.
Watch progress, then get the transcript and notes
HyNote shows recording or upload progress, transcribes the lecture, and saves structured notes in your notebook. Monthly transcription allowances vary by plan.
Open the generated lecture notes
When processing finishes, HyNote opens the notebook automatically so you can read the notes and transcript right away.
Generate flashcards or a quiz
After the lecture notes are usable, create flashcards or a quiz from that same notebook. Export to Google Docs, Notion, or PDF when you want to share.
What you get from every lecture
Full transcript
Every word with speaker identification — professor labeled separately from student questions. Timestamps throughout.
Lecture notes
Structured notes organized by topic, with key concepts, definitions, and explanations clearly formatted.
Summary
Quick overview of the lecture's main topics, arguments, and conclusions. Read in 2 minutes what took 60 minutes to teach.
Flashcards
After your lecture notes are ready, generate study cards from key concepts, definitions, formulas, and facts.
Quizzes
After your notes are ready, generate questions that test understanding of the lecture — not before the notes open.
Mind map
Visual structure of the lecture's topics and how they connect. Useful for understanding the big picture before diving into details.
Why use Lecture to Notes?
Attend class, don't transcribe it
Record the lecture and engage with the material. HyNote captures every word so you can focus on understanding, not writing.
Exam prep in minutes, not hours
Flashcards and quizzes are available after your lecture notes open. Study on the go without spending hours making review materials.
Find anything across all your classes
Search by keyword across every lecture you've recorded. Find a specific concept, formula, or example in seconds.
Works in any classroom setting
Large lecture halls, small seminars, online classes on Zoom or Teams, even outdoor field sessions. HyNote adapts to the environment.
Your notes, your way
Edit and annotate the AI-generated notes. Add your own insights, highlight what matters, and make the notes truly yours.
Share and collaborate
Export to Google Docs or PDF for study groups. Everyone gets the same quality notes, even if they missed class.
What the output looks like
Here is an example of what HyNote generates from a typical university lecture. Switch between tabs to see different output types.
## Lecture 12: The French Revolution — Causes ### Long-term causes • Financial crisis — France's debt from wars (especially American Revolution) exceeded annual revenue • Social inequality — Three Estates system: clergy (1st) and nobility (2nd) exempt from most taxes • Enlightenment ideas — Rousseau's social contract, Voltaire's criticism of absolute monarchy ### Short-term triggers • 1788 harvest failure → bread prices doubled → urban unrest • Louis XVI's indecisiveness → Estates-General convened May 1789 • Tennis Court Oath (June 20) — Third Estate declares itself National Assembly ### Key quote Prof. Martinez: "The revolution didn't begin with a bang. It began with an empty stomach and an unread tax bill."
Why students prefer HyNote
Record and focus
Hit Record at the start of class and put your phone away. HyNote captures everything so you can focus on understanding the lecture instead of copying slides word for word. Engage with the material, ask questions, and think — the notes come later.
Study tools generated automatically
No more spending Sunday afternoon making flashcards from your notes. HyNote generates them from the lecture content as soon as class ends. Review them on the bus, in the library, or between classes. Spaced repetition keeps the material fresh.
Search across all your lectures
Need to find every time the professor mentioned 'mitochondria' across 3 months of biology lectures? Search once, get every instance with timestamps. Link related concepts across different lectures to build a connected knowledge base.
Record on any device
Use your phone in class, your laptop for online lectures, or your Apple Watch when you want to be discreet. Notes sync across all devices. Start a recording on your phone, review notes on your laptop.
Never miss a detail
Professors speak at 150–200 words per minute. Handwriting captures maybe 30–40. HyNote captures every word, every example, every aside. Those throwaway comments the professor makes? They're often on the exam.
Share with study groups
Export notes to Google Docs or PDF and share with your study group. Everyone benefits from the same high-quality notes, even if they missed class. Collaborate on annotations and additions.
Lecture to Notes: HyNote vs Other Tools
| Feature | HyNote | Otter | Notion AI | NotebookLM |
|---|---|---|---|---|
| Live lecture recording | ✅ | ✅ | ❌ | ❌ |
| Speaker identification (professor vs students) | ✅ | ✅ | ❌ | ❌ |
| Flashcards with spaced repetition | ✅ | ❌ | ❌ | ❌ |
| Auto-generated quizzes | ✅ | ❌ | ❌ | ❌ |
| Mind map generation | ✅ | ❌ | ❌ | ❌ |
| Apple Watch recording | ✅ | ❌ | ❌ | ❌ |
| Works with PDF / YouTube too | ✅ | ❌ | ❌ | ✅ |
| Export to Google Docs / Notion | ✅ | ✅ | ❌ | ❌ |
| Search across all lecture notes | ✅ | ✅ | ✅ | ✅ |
| Free plan for students | ✅ | ✅ | ❌ | ✅ |
FAQ
Yes. Create a free account or sign in, then record up to 120 minutes per session or upload MP3, WAV, M4A, FLAC, WebM, or MP4, up to 200 MB and 120 minutes per file. Processing begins when you stop recording or finish uploading. HyNote saves the transcript and lecture notes in your notebook; you can then generate flashcards or quizzes.
Yes. Use the mobile app or Apple Watch to record in-person lectures. HyNote captures audio from your device's microphone. For best results in large lecture halls, sit within 3–4 rows of the front. In smaller seminar rooms, any seat works well. The speaker identification feature labels the professor separately from student questions in the transcript.
Yes. Speaker diarization labels each speaker in the transcript. In a typical lecture, the professor is Speaker 1 (the dominant voice) and student questions are labeled as separate speakers. You can rename speakers after processing. This works best when speakers take turns — overlapping voices (like a heated class discussion) may reduce speaker identification accuracy.
Yes. Create a free account or sign in to generate and save notes in your HyNote notebook. No credit card is required for the free plan; usage limits and features vary by plan. The free plan includes audio recording, transcription, professional templates, and cross-device sync. All plans support up to 120 minutes per recording session; uploads can be up to 120 minutes and 200 MB per file. Pro adds more transcription minutes and transcript export; Plus and Unlimited add high-accuracy speaker identification and note transfer to Google Docs and Notion. Pro, Plus, and Unlimited include a 7-day free trial.
Yes. Create a free account or sign in, then upload a lecture recording in MP3, WAV, M4A, FLAC, WebM, or MP4 format. Each upload can be up to 200 MB and 120 minutes long on all plans. Split longer lectures into smaller recordings and convert unsupported formats before uploading. HyNote generates notes and saves them in your notebook.
Yes. Record the lecture audio in HyNote for up to 120 minutes per session, or sign in and upload a supported recording afterward. Uploads accept MP3, WAV, M4A, FLAC, WebM, and MP4, up to 200 MB and 120 minutes per file. For a YouTube lecture, use YouTube to Notes with an accessible public or unlisted video whose transcript HyNote can retrieve; private, restricted, deleted, or unsupported videos cannot be processed.
Yes. Export your notes to Google Docs, Notion, or PDF and share the link. Classmates don't need a HyNote account to view shared notes. You can also share directly from HyNote by generating a shareable link. Study groups often designate one person to record and everyone benefits from the same high-quality notes.
HyNote achieves up to 99% transcription accuracy for clear speech — significantly higher than standard speech recognition engines, which typically range from 82–90%. A 45-minute lecture is transcribed and summarized in under 30 seconds. Accuracy may decrease with heavy background noise, strong accents, or overlapping speakers. You can edit the transcript after processing to correct any errors. The professor's voice is automatically labeled separately from student questions using speaker diarization (up to 10 speakers on the Plus plan and above).
Yes. HyNote supports 50+ languages for transcription and note generation. If your lecture is in Spanish, French, German, Japanese, Chinese, or another supported language, the notes are generated in that language by default. You can also request translation — attend a lecture in French and get notes in English.
Recording works offline on the iOS app and Apple Watch — you can record a lecture even without internet. The recording is saved locally and processed when you reconnect. Note generation, flashcards, and quizzes require an internet connection since they use cloud-based AI processing. HyNote also works as a Chrome extension for recording online lectures directly from your browser tab — compatible with Chrome, Edge, Brave, Arc, Opera, and all Chromium-based browsers.
Related pages
YouTube to Notes
Check an accessible public or unlisted YouTube video with a retrievable transcript, then sign up or sign in to generate and save timestamped notes.
Audio to Notes
Sign up or sign in to upload MP3, WAV, M4A, FLAC, WebM, or MP4, up to 200 MB and 120 minutes per file, and save audio notes.