Working with other Calendar apps

[mekentosj]

On mac it already works, simply change the default calendar app in the Calendar app preferences and Agenda should pick this up. On iOS it’s more complicated, see

Calendar link to open Fantastical, or other app

No because we can’t ask the system what your default application is. In theory we could ask the system whether an app is present that handles the fantastical2:// url and then call it, but I’m hesitant to do so as a) the user might have fantastical installed but is not really using it and prefers the calendar app or b) there might be other apps on the system that support this url scheme without being Fantastical itself.