

I am running things locally.
Sorry, I missed that. It invalidates part of my comment.
I cannot get an ssl cert for my local network stuff
You can make a self-signed cert. If your mobile app does not have an option to accept it (“ignore SSL errors”) then it won’t work, maybe there’s an alternative?
caldav does not support recurring stuff on the todo … It seems that they all internally juggle how recurring stuff happens
CalDAV is a protocol, which remains the same. The server has little to do with how apps handle things. I have no experience with tasks, but under the hood it’s just another calendar and does not treat recurring events differently. I’m guessing these limitations/inconsistencies are app specific.
This is what I do. I keep the old ones around for a while, and every time I realize that I’m not missing anything, and delete them.
Worst case, I’ll have to root around in my backups. But it has never happened wrt browser bookmarks.