Fantastical

“The one that I use personally is an app called Fantastical. Now, earlier I said that I use Google Calendar as my calendar system, but what I actually do is import those calendars into Fantastical, which is both an iPhone app and a Mac app, and what that gets me access to is Fantastical's natural language processing for adding events.”

“So Fantastical is my calendar app and you can just type in "cal."”