I am quite sure that Google’s licensing terms don’t allow you to use this in paid apps. Not sure whether it would be fine to use in free apps. I suspect so, but better read the licensing terms first in detail!
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Why not, it’s just an http request, if translate responds to the open http request can ‘licensing terms’ even limit this? Does google translate allow the use of http requests from paid browsers like opera or internet explorer?

Yes the code I provided do require an internet connection. You could add network availability checks and return the original string if needed. But since this method should only be used for translating unknown text that you got from the network, assuming a network is available is a quite valid asumption.

So, you’re basically changing the way you get a translated string back instead of a .strings file to use Google Translate. It seems to make sense for the most part. What’s the performance overhead on the difference between using Google Translate vs a static .strings file? Also, it does add the requirement of having an internet connection, so it could be less viable? Does it default to English or some language if internet is accessible or does it just prevent your app from launching/functioning?