Also browsers tend to break features often and some browsers follow certain standards, while others don't. In a lot of cases when developing web-apps you end u

Also browsers tend to break features often and some browsers follow certain standards, while others don't. In a lot of cases when developing web-apps you end up special-casing browsers That's something you won't end up doing in mobile-apps. It's rare you special case OS for those, especially if you're using Xamarin.