AI Note-Taking for Students: The Permission Question First
The useful AI note tools don’t take notes instead of you. They handle the mechanical capture so you can listen, and then help you work through what you captured afterward. A perfect transcript of a lecture you never reopen is worth less than a messy handwritten page you did.
Before any of that, there’s a question the app roundups skip.
Are you allowed to record?
Start with the answer that makes the rest unnecessary. Many German universities already record lectures themselves and publish them in Moodle or ILIAS. It’s licensed, the audio is better than your phone’s, and the legal question is somebody else’s. Check that before you buy or install anything.
If there’s no official recording, two separate permissions are in play.
Your institution’s rules are the first. Course regulations often cover recording, and some departments require the lecturer’s agreement or forbid it outright.
The second is criminal law, and in Germany it’s sharper than most students expect. Section 201 of the Strafgesetzbuch, “Verletzung der Vertraulichkeit des Wortes”, sets a penalty of up to three years’ imprisonment or a fine for anyone who, without authorization, records “das nichtöffentlich gesprochene Wort eines anderen” on an audio medium. Legal commentary generally treats an ordinary lecture as non-public, since the speaker is addressing an identifiable group rather than the world; a public inaugural lecture or an open lecture series can fall the other way.
Sharing is its own offense. The same section covers whoever “eine so hergestellte Aufnahme gebraucht oder einem Dritten zugänglich macht”, so using the recording or making it available to a third party is punishable separately from making it. Dropping the file into the course chat is the part most likely to matter in practice.
It’s prosecuted only on complaint. Section 205 provides that in cases under Section 201 paragraphs 1 and 2, “wird die Tat nur auf Antrag verfolgt”. Nothing happens automatically. That’s why asking works: the person who could file the complaint is the person you’re asking.
A lecturer’s yes covers the lecturer. The provision protects the spoken word of any person, so the classmate who asks a question is also being recorded, and nobody has asked them.
This describes published law, not your situation, and I’m not a lawyer. Rules differ by country and by institution, so the practical move is to ask your lecturer before the semester starts and keep the reply. If you have a documented disability, ask your university’s disability office instead: an entitlement to record is a normal accommodation and it settles the question properly.
Otter: transcription while you listen
Otter transcribes audio in real time with timestamps and writes a summary afterward. Accuracy is good for clear speech in a quiet room and falls off with strong accents, dense technical vocabulary and background noise, which describes a lot of lecture halls.
The free plan is more limited than the headline number suggests, and one of the limits makes it awkward for lectures specifically.
300 transcription minutes a month. At 90 minutes a lecture that’s three lectures, with half an hour left over.
30 minutes maximum per conversation. This is the one that bites. A 90-minute lecture cannot be captured as a single recording on the free plan; you have to stop and restart, twice, mid-lecture.
Three imported files, for the life of the account. Recordings you made elsewhere and want to upload are capped at three, ever.
25 most recent conversations kept, and custom vocabulary capped at five terms.
Two things specific to studying in Germany. Otter’s student discount is tied to an email address ending in .edu, and German university addresses end in .de, so it isn’t available on the address you have. And Otter’s German transcription is still labeled beta by Otter itself, with one language selected per conversation and no support for mixing languages inside a single recording, which is exactly what a German lecture using English technical terms does.
Gemini Notebook, formerly NotebookLM
If you’ve read about NotebookLM, it’s now Gemini Notebook, and notebooklm.google redirects to notebook.google. It has a free tier. The usage limits on that tier have moved more than once, so I’m not going to print a number that will be wrong by the time you read this.
What separates it from pasting notes into a chatbot is that it answers only from sources you upload, and Google’s product page says it shows you the exact quotations from those sources. That matters for study material more than it sounds like it should. An answer you can trace back to the slide it came from is something you can revise from. An answer you can’t trace is a claim you still have to go and check.
It takes PDFs, web pages, YouTube videos, audio files and Google Docs, so the recording, the slide deck and the assigned chapter can live in one notebook. It also turns your sources into spoken summaries, which is useful on a commute and lossy in the ordinary way summaries are.
Where the file ends up
Both of those tools work by sending your recording to a company’s servers. That’s worth a thought in a piece that opened with criminal law, because the recording contains other people’s voices and the slides are somebody’s copyrighted work.
If that bothers you, transcription can also run on your own machine. OpenAI released its Whisper speech recognition model as open source, and there are free front ends that run it locally on a laptop, with no upload, no monthly minutes and no per-recording cap. It’s slower and fiddlier to set up. It’s also the only option here where the audio never leaves your computer.
Processing what you already wrote
The second half of the job needs no specialist app. Give your rough notes to whichever assistant you use and ask it to name the main concepts, explain anything you flagged as unclear, write three practice questions, and point out connections to earlier material.
Then add the step that does the actual work: after it explains the unclear part, write your own explanation back and ask where you got it wrong. Testing yourself on material beats rereading it, which is one of the better established findings in learning research.
At the end of each week, give the assistant that week’s notes and ask for two lists: three things your notes show you clearly understood, and two things your notes suggest you haven’t. The second list is what you review before the next lecture.
What doesn’t work
Recording lectures you never open. A transcript costs you the minutes it took to make and returns nothing until you go back to it, and having the file can feel deceptively like having done the work.
Studying from summaries. Summarizing is lossy in a particular direction: it keeps what was repeated and emphasized, and drops the aside your lecturer made once. Summaries are good for orientation and for revision. As your primary material they leave gaps in exactly the places that were mentioned only once.
Trusting the transcript as a record of what was said. Speech recognition works from what is probable, so an unfamiliar technical term is structurally the hardest kind of word for it, and it’s also the kind you most need to get right. When a definition matters, check it against the slides.
In a nutshell
Look for your university’s own recording first, because it removes the whole question. If you record yourself, understand that in Germany recording someone’s non-public spoken word without authorization is a criminal matter and that sharing the file is a separate one, and that asking is the practical fix. Otter’s free plan gives you three lectures a month and cannot record more than 30 minutes at a stretch, and its German is still in beta. Gemini Notebook, formerly NotebookLM, suits study material better because it answers only from your own sources and shows you where each answer came from.
Sections 201 and 205 of the Strafgesetzbuch were read in the official text at gesetze-im-internet.de; the quoted phrases and the penalty range come from Section 201 paragraph 1, the sharing provision from paragraph 1 number 2, and the complaint requirement from Section 205 paragraph 1. Otter’s pricing page for the Basic plan’s 300 monthly minutes, the 30-minute per-conversation maximum, the three lifetime file imports, the 25-conversation history, the five custom vocabulary terms and the .edu requirement on the student discount; Otter’s help center for German being in beta and for one language per conversation. Gemini Notebook’s product page, read in German, for the name, the redirect, the source types and the description of exact quotations. Pricing and product names here change often, so treat the specifics as a reading taken on a date.
For the wider picture, including what AI detectors do and do not prove, see the full AI for students guide.
