I have been gradually migrating away from using Google services to self hosted alternatives and my calendar and contacts were the most recent change. I settled on Baikal for the CalDAV and CardDAV server and run this on Ubuntu using the ckulka/baikal Docker image and Caddy as a reverse proxy. Now, my calendar and contacts sync between my devices and my server, avoiding any third-party cloud services.

Android with DAVx⁵

Getting my Android phone to sync was straightforward. I used DAVx⁵ to sync the account to my phone, then Fossify Calendar and the native Contacts app as the clients.

Generic login
Login with URL and user name

Base URL: https://baikal.yourdomain.com/dav.php/

Apple Calendar and Contacts (CalDAV/CardDAV)

Apple Calendar and Contacts were trickier. After multiple failed attempts, these are the settings which worked:

Setting	Value
Account Type	Advanced
Username	user
Password	password
Server Address	baikal.yourdomain.com
Server Path	/dav.php/principals/user/
Port	443
Use SSL	Yes

These settings were tested with Baikal 0.10.1 on MacOS Sonoma (14.7.5) and MacOS Sequoia (15.4.1).

Hope this saves you some time 🐡