I think everyone I know has struggled with finding a calendar app that works for them. I have calendars from so many different places (personal, work, Gmail, iCloud), and I need an app that integrates them all in a way that is easy to view and simple to use. Currently, I use Cal (by the folks who created Any.Do), but I’m also testing another app, Sunrise.
What app are you using? Pros? Cons? What are the most important features of a calendar app?