@herz_ag yes, thats possible with WebDAV I think. We’ve had a generalized WebDAV sync app in mind but right now we’re focusing on CalDAV/CardDAV (It is based on WebDAV but still very different). So it will not come in the near future 🙂 Nevertheless the idea of such an app was in our minds for long time. So if not somebody else is making it maybe it will be a new app developed.
HOWTO Hubzilla CalDAV with DAVdroid and Copy Contacts
I just wrote a quick screenshot tutorial on setting up Hubzilla CalDAV with DAVdroid and Copy Contacts on Android. It’s at HOWTO Hubzilla CalDAV with DAVdroid and Copy Contacts