Stenny

Lecture transcripts for Claude · Mac

Study with a Claude that sat through every lecture.

Stenny transcribes your lectures on your Mac. Your Claude project reads every one, so it answers from what was said in class.

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Free · Needs Claude and a Mac with M1 or later · English, French, German

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0:42:17 Tue 10:57
Data Analytics 2026-10-27.md lecture 5 · live

Okay, can everyone hear me at the back? Good.

Let's go back to the housing data from last week, the cloud of points.

Last week we fitted the line with least squares. Today we ask how good that line actually is.

R squared compares the variance the model explains with the total variance.

So an R squared of one means every point sits exactly on the line.

And zero means the line explains nothing at all.

Now let's see what happens on the test data…

What you need

There are two things you need, and two things that make it nicer.

Claude and a Mac with an Apple chip are all Stenny needs. Obsidian and your calendar are optional. The setup asks about both, so there's nothing you have to prepare beforehand.

The initial setup takes about 20–30 minutes. After this, Stenny does the rest.

Free and open source (MIT)

You need

  • Claudeanswers from your lectures
  • A Mac with an Apple chipM1 or newer

Nice to have

  • Obsidianto read the transcripts as notes
  • A calendarso Stenny knows when class starts

How it works

Set it up once. Then just go to class.

Every lecture reaches Claude by itself. You never paste a transcript or upload a file.

  1. Record?

    10 minutes before

    Stenny asks.

    It reads your timetable and offers to record. It never starts by itself.

  2. During the lecture

    You listen.

    A live draft fills your Obsidian note within seconds. One shortcut pauses it.

  3. About 20 minutes after

    You're gone. Stenny isn't.

    The final transcript replaces the draft: sections, a timestamp on every paragraph and a summary.

  4. ? 1:24:10

    Exam week

    You ask Claude.

    Every lecture is already in your course's Claude project, so answers come with the lecture and the minute.

Data Analytics Claude project · example

did the prof say anything about what’s on the midterm?

Claude

Yes, twice. At the end of lecture 3: the midterm covers everything up to regression diagnostics, and one question asks you to read R squared off a printout. At the start of lecture 4: the mock exam on the course page is “very close” to the real one.

Lecture 3 [1:24:10]Lecture 4 [0:02:45]

Why Stenny

Ask Claude.
It quotes your lecturer.

Every lecture lands in your vault as a clean transcript. Your course's Claude project reads all of them, so it answers from what was said in class and tells you the lecture and the minute.

Get started

Claude Code sets it up for you.

Download the code, open it in Claude Code and ask it to follow the setup guide. It installs everything, builds the menu bar app and asks about your vault, calendar and courses.

Download the code Quickstart

Ask before you record: many universities, WU Vienna for example, need the lecturer's consent.

stenny — claude
$ cd stenny
$ claude
> follow SETUP.md

✓ Installed uv and ffmpeg
✓ Built Stenny.app
? Where is your Obsidian vault?