I'm not understanding if a containing app is needed alongside a Today Extension for OSX. I have a very simple and straightforward widget, it does not need nor rely on a main or containing app. With that said, how can I create an Today Extension without a containing app.
What I have so far is that I have a blank app with a today extension.
You cannot create a today extension without having an app. They don't work that way. All iOS app extensions are just that-- extensions to an app. There must be an app, and it must do something to be accepted into the app store (Apple rejects apps for "minimal functionality"). Extensions cannot exist on iOS outside of an app bundle, until or unless Apple decides to change things in the future.