I was playing around with my iP5, looking for a way to hide/delete a few of the stock apps I never use (really, have not used all the way back to the iPhone2G!). I downloaded POOF and proceeded to hide those apps. POOF also allows you to hide the app itself. I did so. Upon a respring I was brought back to screens that showed the apps hidden. So far, so good! On a hunch I went into Cydia and deleted ilibhide along with POOF. The app/tweak was now gone. The hidden apps also forever gone. I tried this method on an iPhone5c with 7.0.4 loaded and although POOF worked as expected, a hard reset brought back the hidden icons. So, at the end of this I learned, if you want to permanently delete certain stock apps and you're on a 7.1 beta this would be one way to go. I'd imagine a fresh restore would bring it all back, but in my case, as the beta is no longer signed, I am 'stuck' with the missing apps no longer available as I wish to keep my jailbreak.