Our family has a bunch of people whose birthdays we need to keep track of. Those birthdays matter to everyone, so we would like to have one shared birthday calendar. The calendar should come with an android app that at least sends reminder notifications about birthdays.
What selfhosted solution are you using for this? What can you recommend?


Don’t host the calendar, just host some WebDAV/CalDAV. That format is supported by basically all apps on every platform (usually including the default app on most phones), so everyone can pick what they want (or just stick with what they already use).
My personal pick for that purpose is Radicale.
I’m using Radicale + DAVx5 + Fossify Calendar.
Curious what other calendar apps on Android folks use.
Another alternative is Baïkal.
Been using Radicale for a few months now, I’m really happy with it. Granted, it’s not the fastest with large scale updates (which don’t seem to be OP’s use case). On Android I settled on One Calendar. Tried a few other apps, including DAVx5, which had issues, I think with full day events showing wrong.
Davx5 is just a bridge between calendar apps and dav providers. One calendar has this function built-in. Any issues showing content on the right time zone, etc would be in the client, not davx5.
I’m sorry yeah, not sure which calendar program it was, then. Perhaps it was Davx5 + another calendar program. I tried a few, and several had issues with full-day events. (the events themselves seemed fine in the ical)