When you click to install or update an app in iOS (iPhone or iPad) it exits from the app store and shows the apps installing on the home screen.
This differs from Android where the confirmation that the app is installing happens in the notification area but your left within the Play store to continue updating/installing/searching apps. In situations where I am updating/installing several apps or want to continue browsing this seems more convenient (though admittedly it is not much effort to re-open the app store).
What is the rationale for this pattern in iOS?