On the iPad, I'm really missing the "heat map" year view, that showed the various colors of dates with scheduled appointments. White was nothing booked for that day, yellow at least one, getting successively more orange/red for heavily booked days.
That was very convenient to use for a big-picture view of what days I had totally clear in a given month/year.
It was also helpful to use as a guide for which calendar(s) things were booked in by toggling calendars on and off individually to see which dates changed colors.
Does Fantastical or Calvetica offer something similar in their month/year views on iPad for iOS 7?