Privacy Policy — CalendarVault

Effective: June 8, 2026

The short version

CalendarVault is a local-first macOS application. Your calendar data is processed only on your computer. We operate no backend, collect no analytics and store none of your data on any server.

What data the app accesses

With your explicit OAuth consent, CalendarVault reads and writes events in the Google Calendar and Microsoft 365 calendars you connect (scope: calendar read/write), and — with macOS permission — calendars available through Apple's EventKit. The app uses this access solely to display your calendars and to create, update and delete the events and availability (“Busy”) blocks you ask it to manage.

Where your data lives

Events are cached in files inside the app's container on your Mac. OAuth tokens are stored in the macOS Keychain (Data Protection). Nothing is transmitted anywhere except directly to Google's and Microsoft's APIs over TLS, from your machine, using your own account authorization.

What we do NOT do

• No CalendarVault servers receive, store or process your calendar data.
• No analytics, tracking or telemetry.
• No selling or sharing of any data with third parties.
• Google user data is never used for advertising and is not transferred to anyone.

Google API Services — Limited Use disclosure

CalendarVault's use and transfer of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.

Revoking access

Remove an account in the app (which also deletes its blocks), and additionally revoke the grant at myaccount.google.com/permissions or account.live.com/consent/Manage. Deleting the app removes all local data; Keychain entries can be cleared via Keychain Access.

Disclaimer

CalendarVault is a professional/business tool provided “as is”, without warranty, and used at your own risk. It modifies your calendar data — you are responsible for verifying results and keeping backups. The full limitation of liability is in the Terms of Use.

Contact

Data controller: the CalendarVault team. Questions: [email protected].