Import a calendar

Canvas, Google, Apple or Outlook. Paste a link, or import a file you exported.

Using Apple Calendar?

A link means publishing your calendar publicly, which is buried in the share settings and only works for iCloud calendars. Exporting a file is easier and nothing leaves your device: File, then Export, then pick the file here.

Choose an .ics file

Where to find the link

Canvas: Calendar → Calendar Feed, in the right-hand sidebar
Google Calendar: Settings → pick a calendar → Secret address in iCal format
Apple Calendar: Right-click a calendar → Share Calendar → Public Calendar → copy the link
Outlook: Settings → Calendar → Shared calendars → Publish a calendar → ICS

Treat these links like passwords

Anyone holding one can read that calendar. Heron uses it once to fetch, then forgets it — nothing is stored, so refreshing later means pasting again. The privacy page spells out exactly what that means.