Desktop App Setup

Overview

Calendar0 provides a native desktop app for macOS, Windows, and Linux that brings your Google, Outlook, and iCloud calendars together in one place. The app sits right in your menu bar or system tray, allowing you to quickly view your schedule, capture meetings in one line, and chat with your AI assistant using global keyboard shortcuts like Cmd+Shift+C (Mac) or Ctrl+Shift+C (Windows).

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Installing the Desktop App

Getting Started with Installation

To install Calendar0 on your computer, choose the installation guide below that matches your operating system.

macOS Installation

1. Go to the download page and select either macOS (Apple Silicon) if you have an M-series Mac, or Download for Intel Mac if you use an older processor.
2. Double-click the downloaded file to open the installer package.
3. Drag the Calendar0 icon into your Applications folder.
4. Launch Calendar0 from your Applications folder or via Spotlight search. The app will appear in your menu bar.

Windows Installation

1. Go to the download page and choose how you want to install: click Microsoft Store to install through the official store, or choose Windows (x64) or Download for ARM64 to download the standalone setup file.
2. Double-click the downloaded setup file (.exe) or complete the installation through the Microsoft Store.
3. Once installation finishes, launch Calendar0. The app will appear in your system tray.

Linux Installation

1. Go to the download page and choose your preferred package format: Linux (AppImage) or Download .deb for Debian and Ubuntu distributions.
2. For the AppImage file, make the file executable in your file manager properties, then double-click to run it.
3. For the .deb file, open it with your system package installer or run the installation command in your terminal.
4. Launch Calendar0 from your application menu.

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Logging In Using Desktop Handoff

Calendar0 uses a secure "desktop handoff" process to sign you into the application window seamlessly without requiring you to manually type passwords into the app.

When you open the desktop app and sign in:

1. The app requests a secure, temporary single-use sign-in token from the server.
2. The desktop window loads the sign-in route using this temporary token securely behind the scenes.
3. The server verifies your active session and establishes your authenticated desktop window.
4. If the handoff fails due to connection issues or an expired token, you will see a screen prompting you to click Try again to restart the sign-in bridge.

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Setting Up Calendar Access

Calendar Provider Overview

Once installed and signed in, you can connect your preferred calendar accounts. Calendar0 supports multiple calendar providers and manages them securely.

Calendar0 supports the following calendar providers:

• Google (OAuth authentication)
• Microsoft (OAuth authentication)
• Apple (CalDAV authentication via App-Specific Password)

Connecting Google and Microsoft Calendars

1. Navigate to the calendar connection screen or onboarding steps.
2. Click on the Google or Microsoft provider tile.
3. A browser window will open asking you to sign in to your provider account and grant calendar access permissions.
4. Once approved, the browser window will close automatically, and your calendar will sync into Calendar0.

Connecting Apple Calendar

Because Apple uses CalDAV instead of standard web OAuth, connecting iCloud requires an app-specific password:

1. Go to account.apple.com and sign in to your Apple ID account.
2. Navigate to the Sign-In and Security section and generate an App-Specific Password (formatted like xxxx-xxxx-xxxx-xxxx).
3. In Calendar0, select Apple Calendar.
4. Enter your Apple ID Email and paste your generated App-Specific Password.
5. Click Connect to verify your credentials and sync your iCloud calendar.

Related

• Quick Start Guide
• Resolving Sync Errors