siddesu writes A popular "encryption" package for Android that even charges a yearly subscription fee of $8 actually does nothing more than give a false sense of security to its users. Not only is the app using a worthless encryption method, it also uses weak keys and "encrypts" only a small portion of the files. One wonders how much snake oil flows through the app stores, from "battery savers" to "antivirus." What is the most worthless app purchase you made? Did you ask for a refund?