If your app or site will be more complex than web-build tools enable, I can bring someone else on board to build it – or perhaps you have those skills in your company.
The message impacts the structure of an app so I build the messaging and the structure at the same time.
I bring the wireframes to a first stage, then send them to a UX person or graphic designer to figure out how they'll appear on different screen sizes.
The wording I develop will be crafted to bring the right message to the user, in a voice and tone that suits your brand. And I'll craft all the little bits of text such as those beside buttons, that help the user feel almost like they're in a conversation.