I am a programmer working on a solution composed of a service and a client application which will use it. There will be only the one dedicated application to work with the service.
In our correspondence we often mention the client app. So far I have noted that most of my colleagues call it Client, capitalized and without a preceding definite article, like a proper name.
But shouldn't we name it just the client? Because Client is neither the internal code name nor the official release title. The app has completely different name.