[Discussion] What calendar app do you use, and why? topic

Did a few searches and didn't find any recent threads discussing Calendar apps in general, so let's get one going.

Discussion starters:

1. What calendar app do you use, and why?


2. Are there other Calendar apps you've tried? What ones did / didn't you like?


3. What features do you absolutely demand from your calendar app?


4. What features do you want from a calendar app, but can't find?


5. If you ditched a calendar app in the past, when did you ditch it, what app did you go to, and why?