I would also like to add that there are PWAs (Progressive Web Apps).
PWAs can be installed on most devices and share even more similarities with native apps (Native app = usually installed through app store). For example installed PWAs can be viewed in Fullscreen or work offline, even though they are still technically a webpage.
So the advantage here is that you don’t need to use an App Store to have an app installed on your phone.
And the main disadvantage is that the PWA can’t access most of the device’s APIs, that you could access through a native app. This means worse performance usually, no support for theming beyond dark/light (like Material You), no good access to on-device databases etc. This is also the reason why most apps aren’t PWAs.
You already have 13 on your comment. You’re like a lemmy celebrity now.
What is it like being famous?