Absolutely! We support most CalDAV configurations and with our new CalDAV feature, you can easily add your calendar to sync with our Integrated Calendar App.
To add CalDAV to your account, please tap More (o o o) | Various Account Settings | choose the relevant account | Edit Account | tap CalDav URL
Then simply enter your CalDAV URL provided to you by your internet provider and wait for the confirmation.
Once the url was added successfully, please go to our Integrated Calendar App (in the Account Drawer), Refresh the Calendar (tap the vertical 3-dot menu at the top right), and you should see your calendar begin to sync.
The initial CalDAV sync may take a few minutes depending on the amount of events you currently have.
Please note: If you don't know your internet providers CalDAV server address, it will usually be listed on their website.