OneCalendar
One Calendar is a productivity app for macOS that brings multiple online calendars into one view for scheduling, events, and reminders.
What is OneCalendar?
One Calendar is a calendar and scheduling app for macOS that helps users view and manage events from multiple calendar services in one place. It is designed for people who want a single desktop calendar instead of switching between separate accounts such as Google, Outlook, iCloud, Exchange, Office 365, Yahoo, Nextcloud, Synology, GMX, Mailbox.org, and ownCloud. The app focuses on giving you a unified overview of appointments, birthdays, and upcoming plans, which can be useful for work, school, and personal scheduling. It also supports managing calendar items from within the app, making it practical for users who need one consistent view across several providers. One Calendar is published by Code Spark and is distributed for Mac through the App Store.
Key features
- View calendars from multiple services in one unified interface
- Manage appointments, events, and birthdays from a single calendar view
- Connect accounts such as Google, Outlook, iCloud, Exchange, and Office 365
- Use the app across work and personal scheduling workflows
- See an easy-to-read overview of upcoming events
- Integrate calendars from providers including Yahoo, Nextcloud, Synology, GMX, Mailbox.org, and ownCloud
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Safety overview
Status: Mostly safe
One Calendar is a legitimate calendar app, and access to calendar accounts and related scheduling data is consistent with its purpose. Because the bundle ID uses an iOS-style identifier on macOS, make sure the installed app is the App Store version from Code Spark if you want the clearest provenance. As with any calendar app, review which accounts you connect and only grant access you expect it to use for syncing and event management.
Recommendation: Keep One Calendar if you use it to combine multiple calendars or manage events from different providers in one place. If you no longer use the app, you can remove it like other Mac apps, but expect to lose its local settings and any convenience features tied to connected accounts until you reinstall it.
Common paths
/Applications/One Calendar.app
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