What is Very Good Calendar Sync?

Very Good Calendar Sync is a macOS menu bar app that automatically keeps events from one calendar synchronised to another. It runs quietly in the background, ensuring your work, personal, and client calendars stay aligned without linking accounts or exposing sensitive data. The app works directly with macOS' Calendar.app, supporting Google Calendar, Microsoft Outlook/Exchange, Apple iCloud, and any CalDAV account. Your first sync is completely free, and setup takes about two minutes.

Who it's for

• Solo consultants who need to keep client calendars in sync without manually cross-checking availability or risking double-bookings
• Product managers juggling multiple priorities who want seamless work and personal schedule management without missed meetings
• Anyone with more than one calendar who wants honest, real-time availability across all their calendars without sharing their entire life

Key features

Local-only synchronisation

The app runs entirely on your Mac with no servers of its own, no data collection, and no analytics on your calendar. Your credentials stay safe under macOS' Internet Accounts, with no logins on third-party websites.

Flexible sync rules

Each synchronisation gets its own rules. You can synchronise only weekdays, weekends, or pick specific days, and set a time range to limit syncing to work hours. Clone events with full details or redact them to show only that you're busy, keeping title, description, and location private.

Automatic background operation

Set up your syncs once, then forget about it. The app synchronises automatically whenever your calendars change, running quietly in your menu bar. Enable "Start at Login" and it will start automatically whenever you log in.

Works with existing calendars

No extra apps to install or connections to configure. If it shows up in macOS' Calendar.app, it works with Very Good Calendar Sync. This includes Google Calendar, Microsoft Outlook/Exchange, Apple iCloud, and any CalDAV account.