I've looked for web app on fiverr. I realized that people have no idea about what is a web app

Is it like Uber but on the web?

My company has web app as their ultimate sales pitch.

I was assigned to develop a mobile front-end to the website we provide our clients with. Deadline was 7 days from project start...

I wrapped together some jQuery mobile crap which looked and felt like an ios native app (as on request).

My boss/salesman thought it was fantastic and started to sell it in as our app. Problem is that he himself can't tell the difference.

Now our clients wonder how to install the "web app", we have the worst shitpile of code to maintain, and I just want to cry when I think of the mess.