No, you don't need to: https://stackoverflow.com/questions/12613402/android-statistic-3g-traffic-for-each-app-how https://stackoverflow.com/questions/12613402/

No, you don't need to: https://stackoverflow.com/questions/12613402/android-statistic-3g-traffic-for-each-app-how https://stackoverflow.com/questions/12613402/android-statist... https://stackoverflow.com/questions/41768642/detect-current-running-application-in-android-nougat-7-version https://stackoverflow.com/questions/41768642/detect-current-... They just want to know how much do you use each app on your phone and not anything related to the TCP exchange. Therefore no MITM has to take place. The rest, I fully agree with you: one deception paves way to another. I think just making users aware that it's Facebook tracking their app usage and not some "Onavo" would be enough for people to think better about their privacy.