Margin

For Mac,
with a small iPhone companion

Catch it now. Sort it later.

⌃⌥Space to write
⌘R to record

A private Mac app for ideas, meetings, videos and documents. Press a shortcut, type or record, and it lands in Inbox. File it in a project when you’re ready. Everything stays on your Mac unless you send it.

Download for Mac
iPhone companion

Apple Silicon · macOS 14.2 or later · about 635 MB

An illustration with invented notes. Try it: write something, add #album, save. It stays in this tab.An illustration of the Mac app, with invented notes.

Inbox · no project ⌘D dictate · ⌘R meeting

All context

Today

Earlier this week

5 items

Call about the reprint

Today · 34 min · Transcript ready

Transcribed on this Mac · Whisper

Notes during this meeting

Transcript

[00:12:04] Speaker 1: If we move to the lighter stock, the spine loses about two millimetres.

[00:12:19] Me: Two millimetres is the difference between a title you can read and one you can’t.

[00:12:31] Speaker 1: Then the title sits on the cover instead. I can send a folded proof by Friday.

[00:12:47] Me: Send it. I want to hold it before we commit.

The original is always there to read.

Read it where it was said.

Calls, voice notes, videos and documents stay in Margin as whole sources you can read and search. A note you write during a call keeps its moment, and links back to it.

12:04

If we move to the lighter stock, the spine loses about two millimetres.

12:19

Two millimetres is the difference between a title you can read and one you can’t.

12:31

Title off the spine. Ask for a folded proof.

Written during this call · 12:34

Then the title sits on the cover instead. I can send a folded proof by Friday.

12:47

Send it. I want to hold it before we commit.

⌘R starts and stops. It never starts by itself.

Recorded and transcribed on your Mac.

Margin keeps your microphone and the call’s audio on separate channels, then transcribes on this Mac with a speech model that ships inside the app. That model is most of the 635 MB, and it means there’s nothing else to install. macOS shows its recording indicator the whole time.

Microphone
System audio

Choosing a project yourself always wins. Two matching tags stay in Inbox.

Inbox first. Projects when you’re ready.

New captures land in Inbox, so you never have to decide where a thought goes while you’re having it. Drag it to a project later, or type the project’s hashtag as you write and it files itself. Margin matches names on your Mac, without AI.

Ask for a folded proof #small-press

Small press

Agents can read your sources. They can’t change them.

Your agents get the evidence.

When you choose, copy a source as Markdown or as a brief for an agent, with its exact quotes. Claude Code and other MCP clients can read your library through a read-only connection you control in Settings.

AI research is optional and always a separate click. On a video, it sends that one public transcript to a provider you’ve set up yourself. Margin doesn’t include one. Every finding is checked against its own quote before you see it.

Lines 41–43 · exact quote matched

“Drop twenty grams and a three-hundred-page book loses about two millimetres of spine.”

iOS 17 or later.
Needs Margin on a Mac.

On your phone, just the jot.

Margin for iPhone opens to a blank page and a Record button. Save a thought or a recording, with or without a connection. Pair once through a folder you choose in iCloud Drive. Your Mac picks everything up and does the transcribing when it’s awake with Margin open.

In preparation. The iPhone beta isn’t on TestFlight yet. When it is, the install link will be on the iPhone page, at this same address.

QR code linking to margin.maxwellyoung.info/ios Scan with your iPhone, or open margin.maxwellyoung.info/ios

No account. No analytics, crash reporting or telemetry.

What leaves your Mac.

Your library lives in ~/Calls on this Mac. Nothing below happens unless you set it up or start it, apart from the update check.

WhatWhat’s sentWhen
TranscriptionNothing, by default. You can choose your own server instead.Only if you choose that route
Video importThe link, to YouTube, to fetch captions or audioWhen you paste a link
AI researchPublic video transcripts and quotes, to the provider you set up. Not your notes or meetings.When you ask, once it’s set up
iPhoneProject names and recent sources; the full library only if you turn that on. Saved in the iCloud Drive folder you chooseEach sync, once you pair
AgentsThe sources an agent asks for, to the agent you connectedWhen it reads them. Disconnect in Settings.
Update checkMargin’s version and your macOS version, to GitHubAbout once a day

Other hand-offs, like sending a prompt to T3 Code, run only when you press them.

Signed and notarized. Installed copies update themselves.

Get Margin for Mac.

  1. Open Margin.dmg.
  2. Drag Margin to Applications.
  3. Open it and press ⌃⌥Space. macOS asks before Margin can use the microphone.

Margin 1.2 (38). Apple Silicon only, macOS 14.2 or later, about 635 MB. Not for Intel Macs.