Cloud Vault Local Vault
acreom supports one-way sync with any calendar that allows .ics subscription.
You can add read-only subscriptions to any calendar via .ics link. Here are examples on how to sync Google Calendar .ics,Outlook Calendar .ics, Apple Calendar .icsor other 3rd party calendars to acreom with read-only access.
Open vault preferences (top-left corner)
Pick a Cloud Vault for calendar sync - If you do not have a synced vault, you can read more about setting up one here acreom Cloud
Open Manage Calendars setting
Add Calendar from url