Calendars (Calendars) is a macOS privacy permission. Calendars permission gives an app access to your calendar events, including event titles, times, locations, attendees, notes, and attached files. This can reveal your daily schedule, meetings, personal appointments, and the people you meet with. Common apps that request this permission include Fantastical, Zoom, Microsoft Outlook, Spark, Notion Calendar. Risk level: caution. To check which apps have this permission, open System Settings, go to Privacy & Security, and select Calendars. CoreLock audits calendar permissions and identifies apps with access that don't appear to be calendar or scheduling tools. It flags apps that have both calendar and network access, which means they could be syncing your schedule to external servers.
Calendars permission gives an app access to your calendar events, including event titles, times, locations, attendees, notes, and attached files. This can reveal your daily schedule, meetings, personal appointments, and the people you meet with.
Click the Apple menu and select System Settings.
Click Privacy & Security in the sidebar.
Click Calendars. This shows all apps with access to your calendar data.
If you've switched calendar apps or no longer use one, revoke its access. Only your active calendar and meeting apps need this permission.
Go to System Settings > Privacy & Security > Calendars.
Disable the toggle next to any app you want to remove calendar access from.
Some apps add calendar subscriptions rather than reading your calendar directly. Open the Calendar app and check for any subscribed calendars you don't recognize under Settings > Accounts.
CoreLock audits calendar permissions and identifies apps with access that don't appear to be calendar or scheduling tools. It flags apps that have both calendar and network access, which means they could be syncing your schedule to external servers.
Yes. Calendar access includes event titles, descriptions, locations, attendee email addresses, notes, and any attachments. If you put sensitive information in calendar event notes (meeting agendas, dial-in codes, project details), any app with calendar access can read it.
They request it to show upcoming meetings and provide one-click join buttons. It's convenient but not strictly required — you can still join meetings manually without granting calendar access. It's a convenience vs. privacy tradeoff.
Yes, calendar permission typically includes both read and write access. An app could theoretically create, modify, or delete events. This is how calendar spam works — malicious calendar subscriptions push unwanted events to your calendar.
CoreLock scans every app on your Mac and shows you exactly which permissions each one has. Find hidden access in under 60 seconds.
Download CoreLock FreeAvailable for macOS and Windows