Integrate CalDAV to android outlook Is it possible to integrate the caldav calendaer into the android outlook-app? 

Usually caldav-calendars doesn’t appear in the android outlook-app, so I search for a way to integrate caldav to outlook. I know there is a software called ‘caldavsynchronizer’ but its only for desktop (windows): https://caldavsynchronizer.org/

There is another app called DavX5 to synchronize CalDaV but this is for money I dont want to waste it: https://www.davx5.com/ 

Do someone have the experience?
According to my research, Outlook for android does not support the CalDAV feature so far. If you still want this feature, you may try to vote for it via uservoice.