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Before you start

A Mac with Apple silicon (M1 or later) on macOS 14 Sonoma or newer, and Google Chrome (Brave, Edge and Chromium may pair, best-effort and untested). Intel Macs are not supported yet.

For websites & code

A local project with a dev server, and a coding agent on this Mac; MySunday drives it, it does not replace it. Install Claude Code or Codex, then sign in to it (claude or codex login).

Claude Code: npm install -g @anthropic-ai/claude-code, then run claude once and sign in.
Codex: npm install -g @openai/codex, then run codex login.

Get MySunday on your Mac

1. Download

MySunday for macOS: a Mac with Apple silicon on macOS 14 or newer. Downloads are for signed-in members of an active workspace; an Individual trial counts.

Download MySunday for macOS (Apple silicon)

Voice and meeting notes get ready in the background after you sign in (Wi-Fi recommended).

2. Open it

The app is signed but not notarized by Apple, so macOS says it cannot check it. To open it the first time:

Drag MySunday to Applications from the disk image.
Open it once from Applications; macOS asks you to allow it the first time. See each step.

Open it the first time

The first time you open MySunday, macOS warns that Apple could not verify it is free of malware. That is expected: MySunday is not notarized by Apple, and the warning does not mean a problem was found. Allow it once with these three steps; after that it opens normally.

1. macOS stops the first launch.
Open MySunday from Applications. macOS says “‘MySunday’ Not Opened” because Apple cannot check it. Click Done (not Move to Trash).
2. Allow it in System Settings.
Open System Settings → Privacy & Security and scroll down to Security. Next to the message “‘MySunday’ was blocked to protect your Mac.”, click Open Anyway.
3. Confirm once.
Click Open Anyway again in the dialog and enter your Mac password or use Touch ID. macOS remembers the choice; updates open normally.

On macOS 14 Sonoma you can instead Control-click MySunday in Applications, choose Open, then Open.

Why: MySunday is signed with its own certificate but not notarized by Apple (we do not use an Apple Developer ID), so macOS asks you once.

Open it from Applications, not from the disk image or Downloads: macOS runs apps opened from there in a temporary read-only copy.

3. Sign in from the app

Open MySunday and choose Sign in (in its window, or from its menu-bar icon); your browser opens to approve this Mac. The app's window then walks you through the rest. One Mac at a time per account; signing in on another Mac signs the first one out.

While you are signed in, the app checks for updates and offers to install them.

Troubleshooting

macOS still refuses to open the app: run xattr -d com.apple.quarantine /Applications/MySunday.app in Terminal once, then open it again.
Sign in says “Can't reach MySunday; check your connection.”: check that this Mac is online, then choose Sign in again.

Chrome extension

The app will ask you to add it to Chrome.

Get the extension on the Chrome Web Store

Developer build instead (load it unpacked)

Unzip it somewhere you will keep (Chrome loads it from that folder every time).
Open chrome://extensions, turn on Developer mode (top right), click Load unpacked and pick the unzipped folder.
Pin MySunday in the toolbar and open its side panel.

A build loaded this way does not update itself, and it pairs as the developer build: the app’s window says which one is connected.

How to use it

Start voice: Press ⌥Space (Option-Space). The microphone stays open while you talk and point; press it again or say goodbye to stop.
Point: While voice is on, rest the pointer on an element in Chrome for a moment to point at it, then say “this”, “that” or “here”.
Ask about anything: Press ⌃⌥Space (Control-Option-Space) to ask about the page you are on, your code, or text you selected in any Mac app.
Continue your session: Pick one of your own Claude Code or Codex sessions in the Session select (or say “in my Claude session”) and the request goes into that conversation instead of a fresh run.
Wake word: Say “Sunday” to start voice without the hotkey. It is off until you turn it on in Preferences.
Gesture wake: Draw your own symbol with the pointer to start voice. It is on as soon as you save a symbol in Preferences.

These are the shortcuts MySunday starts with; change them on the app's Settings → Sunday.

What leaves your machine

The HTML and text of what you point at, and short summaries of the session's errors and network calls, in your coding agent's prompt, so they reach its provider (Anthropic or OpenAI); values typed into inputs are removed first.
Screenshots of the element you point at and of the result, sent to the model that checks the change: OpenRouter by default; an administrator can route it to OpenAI, Google, Cloudflare or AWS Bedrock instead.
Voice runs on your Mac by default: while the open microphone is on (from the hotkey until you turn it off or say goodbye), speech recognition and spoken replies are processed on your Mac, and your audio does not leave it. The voice downloads from Hugging Face after you sign in. When MySunday turns on a cloud speech engine for everyone or for your workspace, your voice goes to that provider while voice is on; the privacy policy names each one.
Your words, element names and page URLs, and the first 80 characters of what you copied, selected or dragged during a session, sent to the voice model (OpenRouter by default, or the provider an administrator routes voice to).
Instructions, transcripts, task outcomes and usage counts, synced to this service for your dashboard.
Voice calibration samples: for each voice request, only the speech-recognition confidence and whether it was sent, confirmed, corrected or canceled (never audio or text), kept 180 days to tune when MySunday reads a request back.
Your code stays on your Mac: the agent edits it locally and only the agent's own provider sees what it reads.

Details, retention and deletion are in the privacy policy.