I use Hebcal in multiple devices. How can I sync events across all of them?

Calendars created by Hebcal are easily downloaded and imported into various calendar apps, including iPhone, Google Calendar, Outlook PC, Outlook Web, macOS Calendar, and any app that supports iCalendar (.ics) feeds or subscriptions.

If you add your Hebcal events to one of those popular web-based calendars, you should see the same calendar events on all devices that are connected to that calendar app.