I have a simpler problem - I want a yearly calendar app (for Android) that just shows the yearly calendar (for any year), nothing else (no events, no reminders, no anything).

Any app I find seems to disappear from the Play Store after a couple years.

Bonus: show the weeks vertically.

I like a version of this[0] where the weekdays are aligned.

[0] https://neatnik.net/calendar/?layout=aligned-weekdays