Fantastical 2 for iPhone includes the Fantastical Apple Watch app. Open the watch app to view your schedule, and tap an event to view its details.
After installing Fantastical 2 on your iPhone, the Fantastical app will be listed in Apple’s Watch app. Here, you can choose to install Fantastical on your Apple Watch by enabling the ‘Show App on Apple Watch’ switch.
Use Fantastical's glance to see your next upcoming event or reminder. A general overview of your day is shown at the top of the glance. Tap the glance to open the Fantastical 2 app on your watch.
Force Touch the screen and tap 'Add Event'. Dictate your event to Siri and confirm your new event or reminder.