Mobile web app developers seem to have forgotten that the web is inherently cross-platform. That’s the whole point of the web: Ubiquitous access to information. What’s the point of building a mobile web app if you’re only targeting iOS users? If you are targeting multiple platforms, why are you forcing the iOS UI on non iOS users? The navigation bar with a back button does not exist on Android, users won’t be expecting it, so save yourself the 50 pixels of screen real estate.
Solution: Build a UI and UX that is platform-agnostic."