Interesting idea. Does ownCloud generate such event summaries per language?
I do not know for sure…
I think owncloud persists soe meta data for the birthday event. But the VEVENT is generated for every request.
This way the calendar entries in the web are always shown in the locale of the page (browser locale)
Is it only for birthdays?
As far as I can tell: Yes
But owncloud is an open framework and even ‘contacts’ is an app now.
So there may well be other apps around, that do similar things
Yes, but why install another app on my mobile device when I can have the same result by just ticking a checkbox in DAVdroid
An then it is also always consistent with the web view.