It's ethically dubious that the advertised function of the app is a VPN to "keep you and your data safe", while the reason it exists is so that all phone traffic goes to Facebook. This is not clear from the app description -- there is only a generic message about monitored app use, to which users are so used as to not pay any attention. > "The app's privacy policy says it may share information with "affiliates" that…
"ethically dubious", i consider it criminal; though they probably got some (lawyer written) fine print to say it is not so.
I remember how big a deal the News International phone hacking scandal was; this actually seems much worse.