I've been running a video game collection site for years. The number one request I get from people is to build an app. I've worked so hard on making the mobile version of the site to be just as functional as the desktop version, and I don't really understand why people want an app over just using the web version. I sometimes wonder if I should just do it to see if I'm missing out on market share, but I don't really want to have to maintain two different user interfaces.
building and maintaining a simple webview app might be easier than you think.
if you ever end up making one im very very curious about how much market share that would gain
You could add features to make it a PWA and explain to users how to save it t their desktop. I used ProtonMail for years that way (I do not have a smartphone anymore, so no longer do so).
Similar situation here.
My take on it is that frequent users perceive apps as desktop launchers/shortcuts.
They don't care about the difference between app and web, per se, but the bookmarking situation in mobile browsers is awful (desktop too, honestly), and an app presents a convenient launcher for the service/site/data they want.
Adding a springboard launcher for a PWA is easy but still apparently more frictional than installing an app.