Apple Calendar
How Apple Calendar sync works
Apple Calendar subscribes to an ICS feed from Sync2Cal. Updates depend on the app and subscription settings; use iCloud if you want the calendar on multiple Apple devices.
Apple Calendar uses an ICS subscription link to read events from Sync2Cal. Keep the subscription to receive future changes; downloading and importing a file only gives you a snapshot.
How changes arrive
Apple Calendar checks the feed for updates. Timing depends on your device, account, and subscription settings, so there is no guaranteed one-hour refresh for every user. Sync2Cal cannot make a device fetch a change immediately.
See update timing and refresh steps to tell whether a change is missing from the source, Sync2Cal, or the app.
Use the subscription on your devices
Follow Apple Calendar setup. If you want the subscription across your Apple devices, use the same Apple Account and save the subscription in iCloud rather than locally.
If one device shows the events and another does not, use the device checklist. If they are absent everywhere, use Apple missing-events troubleshooting.
Editing or removing events
A subscribed feed is read-only in Apple Calendar. Its events come from the publisher. To stop seeing the whole subscription, hide it or follow the removal guide.
Frequently asked questions
Is an Apple subscription the same as importing an ICS file?⌄
No. A subscription checks a feed for future changes; an imported file is a one-time copy.
Does Apple Calendar refresh every hour?⌄
There is no fixed guarantee across devices and settings. On Mac, you can inspect a subscription’s Auto-refresh option. See the update-timing guide for refresh steps.
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