Questionable app that is not finalized, or is it because of the 4.4.4 QC. Let me explain: I try to go to, for example, WiFi Key Recovery, first of all displays the password prompt (for example, I do not know him), come out of the "application" rest "back", then call the "Task Manager" (Application Manager / last fuzzy applications ) and lo and behold, the passwords from Wi-Fi disclosed, that is, they are visible on the thumbnail (as it "saves" the last image in the memory, and after a second, or even less, slips "information we need").
P.S. I live in a private home on password does not need to bother. It costs only for Play Market.