Setting up DavDroid and Etar on my tablet, for accessing my calendar. I use NextCloud for my calendar and contacts. Feels maybe slightly overkill for just that.. but I want something with a web interface for the calendar, which Nextcloud has, and Radicale doesn’t I don’t think.
I think installing the Nextcloud app first made it slightly easier to set it all up than when I did it on my phone a while back, but that said I don’t remember it being too tricky doing it manually.