The "fitness tracking app Starva" did not reveal the secret army base, soldiers inappropriately using their phones and broadcasting their routines by using a civilian application designed to share their location revealed the secret army base.
I know it sounds pedantic, but I think we should be very careful about verbiage when it comes to who is to blame here: it's not the apps. This kind of thing gets exacerbated hugely by media headlines too - always putting the app front-and-center and downplaying the policy/training/OpSec failures. This leads to erroneous and scary conclusions like "apps should be flagged for national security" like the GP mentioned - but the actual takeaway should be that we need to train the dang soldiers operational security.