I use most apps on my phone as web sites. I think apps are nice when your app uses gestures that would otherwise overlap with webbed site, or when you're doing anything computationally intensive that would otherwise be done in JavaScript (or even WASM).

Another good reason is if you do not know how to make web sites but you do know how to make apps. One of the very best reasons is when your app is a web browser.

I also get the vibe that cert pinning is easier to do in apps than websites (I make websites and not apps, but even then I know how to cert pin in an Android app when I wouldn't be able to tell you how to set up HSTS, which I don't think even does cert pinning).

But I suspect that apps are better for leveraging analytical capabilities to synergize our product development teams with our long-term business strategies while delivering shareholder value and, most importantly, delighting our customers while delivering relevant deals and offers.