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Voido shows the calendars you already use alongside your own events in one week view, and you drag a card to change its time. Connecting calendars requires the desktop app; the web app can’t read or edit external calendars yet.

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Add a calendar account

Choose Add Calendar Account from the account menu in the sidebar, or open Settings → Account → Connected and click + Add Calendar Account. Then pick a provider.
Click Connect iCloud and enter your Apple ID email and an app-specific password. To create one, sign in to your Apple Account, go to App-Specific Passwords and create a new password named Voido.Re-import rebuilds the iCloud data on this Mac without changing anything in iCloud.
Click Connect Google and authorize in your browser. Calendars you can edit sync both ways.If Voido says the current authorization is read-only, disconnect and reconnect, and allow calendar editing on the consent screen.
Click Connect Outlook Calendar, sign in with Microsoft and choose the calendars to sync. Outlook.com and Microsoft 365 accounts are supported, and changes sync both ways.
  • If your organization grants read access only, the account shows as read-only.
  • Changing invitees makes Microsoft send invitations.
  • Recurring events can be changed for this event or the entire series only.
  • Voido polls for changes, so edits made elsewhere don’t appear instantly.
  • If an event was changed elsewhere first, your save is rejected and you’re asked to refresh.
Enter the server URL, your username, and a password or app-specific password. The server must use HTTPS.CalDAV calendars are one-way and read-only: Voido reads them and never changes the external calendar.
Events from read-only calendars are labelled as view-only in Voido.

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Add a to-do account

To-do accounts are added separately. Choose Add Todo Account to connect Apple Reminders, Microsoft To Do, Google Tasks, Todoist or Dida365.

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Undo AI calendar changes

The AI assistant asks before it changes your calendar. After a change is applied, the chat’s Operation History bar offers Undo All, Keep All and Review, and each item has its own Undo.
  • Undo also restores changes written to connected calendars.
  • Changes to an external calendar can only be undone on the device that wrote them. On any other device, Voido asks you to undo on the device that wrote them.
  • Invitation emails that were already sent can’t be recalled.
  • If someone edits an item again after the AI changed it, undo flags it as a conflict for you to resolve.
For assistant permissions, see AI assistant.