Nobody seems to care but I do. I try to use open source versions of Apps and other software. My girlfriend has a new phone, which is Android One (8.1) (supposedly pure Android + Google). I am trying to set it up for her. On my lineage OS phone, I am using the default calendar app not the Google. Somehow, we can't find it on her phone and the only app seems to be the Google calendar. This is bs. It used to be that one can choose between two. Any ideas, how I can get the default calendar app installed? I can't find it anywhere?
PS: As always, people will ask "why aren't you using Google calendar? it syncs and does this and that..." I have my own calendar server and it does the same. If I can have more privacy with little impact on convenience, I choose privacy.
My question is different than the already existing "non-cloud" local calendar. Some open source calendar apps also provide cloud integration as a feature. I just don't want to use Google's proprietary app.