I think Fossify calendar is best open source (offline) android came application

I love fossify calendar.

Recently started using this synced with my Nextcloud. Really happy with it, only complaint is the fact that I can't remove their "Regular event" calendar

I've never seen a good Android calendar app. I think even Google Calendar is pretty bad. That's why I gave up and started using GNOME Calendar on my PC instead. Though now looking at the screenshots it seems like the Fossify one is actually good. Too bad I don't want to install one more app so it doesn't create a new line in my app drawer.

I know simple fossify apps are appreciated by the comminity. I have yet to try them. I like Etar as a calendar. It is also on FDroid

May seem stupid, but after 15 min of using it I didn't find how to subscribe to an ical calendar nor how to sync to an existing calendar account, so basically how to use it. Also some things are weird like holidays being available only in one language in multilingual countries or distinctions between birthdays and anniversaries which I am not sure I understand

I just want a really good homescreen widget that shows a month view, and a widget that shows a task list I can check off as they're complete. Right now I'm using Business Calendar, but I'd switch to open source in a heartbeat if any of them offered this.