According to the developers, "Vault is a mobile app designed to hide private pictures, videos, sms, call logs and contacts on your phone". The app also privides users with a Private Browser and the ability to set up multiple (and fake) password protected vaults in which to store secret content and contacts. Stealth mode can be activated, so that the Vault icon is hidden from the device home screen (disguised as a camera) and can only be accessed once a passcode is typed. A photo is taken of any "intruders" who enter the wrong passcode.