I have been building a small app and I want to launch but I am continually unhappy with the aesthetics. I know enough to do a basic design but my focus is mostly backend.
Do I launch the product early and then work on UI or do I spend time on UI and delay the launch?
Usual users buy with their eyes. Yup, functionality may be missing but if it looks great people will still come back just because the thing looks nice.
Having said that - of course everything depends on your intended audience.
It depends on your audience and the competitive options. If solving a unique problem for highly technical users you may be able to address UX later. If your audience are consumers then the experience is everything...almost.