The "default browser" for most Android users is Chrome, whereas in-app webviews use the system WebView. Google have decoupled it from OS releases in recent year

The "default browser" for most Android users is Chrome, whereas in-app webviews use the system WebView. Google have decoupled it from OS releases in recent years and it's updated through the Play Store, so it's not awful... but it still lags behind and is missing features. Not to mention, the in-app browser has no shared cookie storage etc, so all your logins are wiped.