This sounds a little tricky for someone that just uses an iPhone? Although with all the fuss lately with apple I’m tempted to make the jump over 

DandelionLightning

The ideal is to have your own CalDAV server. 

 are great. Just choose one and set it up in a few minutes.

 which is an android app to sync with CalDAV/CardDAV. Your local calendar app will be able to read from that.

Then for desktop, Thunderbird is a nice client that connects to CalDAV.

And that's pretty much it. That way you will have your own calendar and contacts (and files), on your own server.

Daily discussion thread

saloon

The ideal is to have your own CalDAV server. [Radicale](https://radicale.org) and [SabreDAV](https://sabre.io/) are great. Just choose one and set it up in a few minutes.

Then on your phone, install [DavX5](https://github.com/bitfireAT/davx5-ose) which is an android app to sync with CalDAV/CardDAV. Your local calendar app will be able to read from that.

Then for desktop, Thunderbird is a nice client that connects to CalDAV.

And that's pretty much it. That way you will have your own calendar and contacts (and files), on your own server.