It's just a launcher (which is just an app that handles a specific intent that fires when you press the Home button). "Incredibly invasive" is hyperbole. All it

It's just a launcher (which is just an app that handles a specific intent that fires when you press the Home button). "Incredibly invasive" is hyperbole. All it will take to turn a "Facebook phone" into an "Android phone" is to install a more stock-like launcher. The great thing about Android is that there isn't a whole lot of tight coupling between components, which is what makes Facebook Home possible in the first place. An iOS-based Facebook phone, on the other hand, would have to be tightly coupled by design, and wouldn't let users opt out of those features. Compare, for example, the Twitter integration on iOS with the generic share intent handling on Android; Android lets you install intent handlers to handle the "share" intent - Twitter, Dropbox, Pocket, whatever you want, while iOS gives you Twitter and you're going to have that and only that whether you like it or not.