Increase the frequency of calendar sync

Increase the frequency of calendar sync

Its great that we can subscribe to our project calendar via gCal or iCal links, but it only refreshes/syncs down every 6-7 hours. I would prefer it to be instantly, but i understand that might be tough. Would it be possible to increase the sync to hourly at least? 6-7 hours is a long time to wait for our iphone calendars to refresh.