There's also a helpful option to notify someone when you're not going to arrive on time, and a schedule view (not entirely unique) to show when you have a free slot. And not surprisingly, the app will support both Google-based calendars (including Google Apps) and Microsoft's Exchange.

Newton Calendar only exists in a preview form right now, but we're told it should be widely available in the near future. And in case you're wondering: yes, your $50 per year subscription for the full-featured email app will cover Calendar as well. That's still a steep price, but it might be easier to swallow knowing that you're getting two full-featured apps.