I’d probably just spin up a calendar such as one on Nextcloud but also change the name of the event to another plausible name such as:

Pay day.
Grandma coming to town.
Grandma leaving town.
Walk the cat.
Pick up groceries.
Collect mail.
Drop off mail.

Given that Apple is more likely to submit to government (any, any country) coercion and doesn’t allow side loading of apps your next phone should be Android. Especially one that supports GrapheneOS or CalyxOS.

Failing that, many apps work as web applications and if saved to the home screen it’ll both look and feel like a native app.

Wait until the pedo priests head about this.

Wait, people can afford phones? Or is that just some crap that people made up about millennials.

There was a point in time when GOT was only available via an $80 a month pay tv subscription after the earlier seasons were aired on regular television. Once again, piracy is an access issue - not a theft issue.