@evivz it's been around for a number of years and not been blocked so far. seems like a great app
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I made an app like this once. It was online from 2011 to 2015.
It is against FB toc but they did not seem to care. In April 2015 however Facebook disabled an old version of their api, that was necessary to operate such an app. (it allowed to receive a users friendlist)
The apps that still provide this functionality even after April 2015 are browser extensions that scrape the Facebook page or apps that take your Facebook credentials, log in with it and retrieve the friend list in a hidden web view.
I have not tried this app (have no ios device) so I can not 100% say that they do it like that. If they do, you may want to think twice if you want to give them your Facebook credentials.
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