When comparing Fantastical 2 vs WeekCal, the Slant community recommends Fantastical 2 for most people. In the question“What are the best calendar apps for Mac OS X?” Fantastical 2 is ranked 3rd while WeekCal is ranked 10th. The most important reason people chose Fantastical 2 is:
Fantastical makes it really easy to add events using their superb natural language parser. For instance, an entry like "breakfast at 9am at The Diner" will be handled correctly. In addition to their best in class natural language processing, Fantastical has awesome features such as allowing users to append "/work" or "/personal" in order to add events to the specified calendar and setting up abbreviations that will add snippets of text.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Very polished natural language text entry
Fantastical makes it really easy to add events using their superb natural language parser. For instance, an entry like "breakfast at 9am at The Diner" will be handled correctly.
In addition to their best in class natural language processing, Fantastical has awesome features such as allowing users to append "/work" or "/personal" in order to add events to the specified calendar and setting up abbreviations that will add snippets of text.
Pro Awesome syncing support
Google, iCloud, Facebook, CalDAV, Exchanged, and iPhone calendar are all supported out of the box.
Pro "Dayticker" is a great way to quickly see appointments
Although pretty simple, the Dayticker view, located at the top of the user interface, is simply fantastic for quickly seeing which days are booked out. It also acts as a convenient way to add new events (long press on a day).
Pro Displays inline map of the event's location
The app displays inline map of the event's provided location. Additionally, users can choose between Apple's Maps or Google's Maps applications to use the feature with.
Pro Allows adding reminders
Using the natural language parser, reminders can be added with the keywords "reminder", "todo", "task", or "remind me to."

Pro Syncs with iOS reminders
Existing reminders can be used or adde with Siri.
Pro Functions as a widget
With Fantastical 2, the calendar can be accessed through a widget in order to save time.
Pro Gesture driven
Fantastical 2 lets users flick, scroll, and swipe to quickly move through different views and types of information.
Pro Custom colors
Tasks can be color coordinated in order to see their categories at a glance.
Pro Resizeable window
The divider between the two views can be dragged for customized viewing.
Pro Templates
Week Calendar includes templates, which are files containing one or more events that can be duplicated from week to week. With each event, information such as address, time, or duration can be copied as well. This comes in handy for routine events like work, school, or exercise.
Pro Dropbox attachments
Week Calendar supports dropbox file attachments in collaborative calendars so other people are able to quickly see files relating to an event.
Pro Action menu
With the action menu, users can use up to 40 kinds of automated actions.
Pro Easy to move events
Just like with apps on the home screen, events on Week Cal can be moved with a tap and hold gesture.
Pro Quickly see relevant info
Week Calendar displays a day's events just by tapping the date. The data can be tapped directly from year view.
Pro Custom color
Best thing is being able to set different colors, if you have multiple events during the day it really helps to set different colors to easily get an overview for school lessons as an example.
Pro TextExpander support
Pro Dense week view
Cons
Con Uses “dots on a day” style interface
This is not the way calendars should work.
Con V2 discontinued, V3 too expensive as a subscription model
Con Only one way to display your events
It would really help to have an actual calendar with the events written into it instead of a list and dots.

Con Have to pay again for the iPad version
Con Not as good as Moleskine cal
Con New PRO subscription
Pro subscription needed to get same functionality that existed for previously paid customers.
Con Issues with repeating events
When making templates, multiple repeating events can't be duplicated from within the same file.
