Thanks Quinn. First, before I dig deep, wanted to clarify to be on the same page - Using the terms you have mentioned to be better aligned, assume I want to build 2 'separate' products - MyApp.app - This is my GUI Program MyServer.app - This is my Server Program I would also want to build, deploy and distribute them 'separately'. Is this approach okay ? I mean, instead of having MyServer.app embedded in my GUI program itself (as you proposed).

Also, If the user installs MyServer.app independently, now MyServer can also be launched from Finder. Also, one can use MyServer.app to run as a daemon or agent via launchd. Now when MyServer is launched from Finder, because it is a server program, it will not show an GUI. Which I understand is not what macOS users expect, hence not the right UE. Apart from embedding MyServer into MyApp, is there any other approach I can take and still keep MyServer as an independent application ?

I am trying to build a watchOS app through CMake (generator used is xcode) and Objective-C. When I added the above(int main as entry point), I get an error saying 'WKApplicationMain' is not found. Am using WatchOS 8.3 sdk. Can you help ?

Is it possible to create user interfaces for watchOS programmatically ? i.e. without using the StoryBoard files ?