Apple Calendar
ICS subscriptions, refresh cycles, and adding calendars.
How Apple Calendar sync works
Apple Calendar uses ICS subscription, which polls for updates roughly every hour. Events are not instant — this is an Apple limitation, not a Sync2Cal bug.
Events not showing in Apple Calendar
Apple Calendar polls for updates roughly every hour. You can trigger a manual refresh, but instant sync is not possible — that is an Apple limitation.
How to add a calendar to Apple Calendar
Find your calendar on Sync2Cal, tap Subscribe, select Apple Calendar, and click the ICS link. Apple Calendar handles the rest automatically.