I'll tack on: I've happily paid for Fantastical (which is a monthly subscription, granted), and it has the nice menubar interface, a button to join video calls

I'll tack on: I've happily paid for Fantastical (which is a monthly subscription, granted), and it has the nice menubar interface, a button to join video calls (works with Teams, BlueJeans, Zoom, probably more), integration with ANY calendar system, and it's only $4.99 a month. And I get a full desktop app and iOS app with it, and regular significant updates. I'm not as put out by the subscription model here because this is an application I'd be renewing my license for every new release anyways. I don't see why I'd pay more for less here.