ZářezPRIVACY

Privacy Policy

Zářez for Mac

Zářez is a free Mac app that shows useful information in your display notch. You don’t create an account and I don’t collect any data about you. The app sends nothing to me — no analytics, no ads, no server of mine.

What stays on your Mac

Settings, clipboard history, the shelf, the quick note, focus statistics and your chosen stop are stored only on your Mac. You can clear the clipboard history in the app with one click. Passwords from password managers and strings that look like app-specific passwords, API keys or tokens are never saved to the history.

Calendar, Reminders and Contacts

If you allow access, Zářez reads today’s events, reminders and names and birthdays from Contacts to show them in the notch. It creates events and reminders only when you ask. The data stays in Apple’s apps and in iCloud according to your settings; Zářez doesn’t send it anywhere. You can revoke access anytime in System Settings.

Network — only for data you turn on

Zářez connects only to public services to show the data you asked for, and sends only what the request needs:

  • Weather (Open-Meteo): the coordinates of the town you choose.
  • Warnings (ČHMÚ, opendata.chmi.cz): downloads the public warnings file, sends nothing.
  • Departures (Transitous, optionally Golemio for Prague PID): the stop name you search for and its identifier. For Golemio, your own key.
  • Music and Spotify: control happens locally; Spotify album art loads from Spotify’s servers.
  • Claude Code and Codex limits (off until you turn them on): Codex is read locally only. For Claude Code, your existing sign-in is used and Anthropic is only asked for usage.
  • Update check: once a day, a small file is downloaded from jinyuhel.cz.

These services have their own policies. Zářez does not determine your Mac’s location.

AI agents, headphones and the equalizer

  • Agents in the notch (off until you turn them on): Zářez adds hooks to Claude Code and Codex. They send the agent’s events only to Zářez on your own Mac (127.0.0.1), never to the internet. Zářez reads the session transcript on your Mac to show the conversation. A reply is either pasted into the session’s terminal (this needs the Accessibility permission) or run locally with claude --resume / codex exec resume.
  • AirPods and headphones: with the Bluetooth permission, Zářez reads the name and battery level of headphones when they connect. Nothing is stored.
  • Equalizer that follows the music (off until you turn it on): with the System Audio Recording permission, Zářez listens only to Music or Spotify and turns the sound into the height of a few bars. The audio is never recorded, stored or sent.

macOS permissions

Accessibility is only needed to paste from the clipboard with a click (Zářez presses ⌘V for you). Automation is used to control Music and Spotify. All permissions are optional.

Contact

Karel Matusiak, sole trader, IČO 30210453. Privacy questions: [email protected]. Site privacy: Privacy.

Effective 11 November 2026.

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