Vault

Vault is a very useful tool that offers the option to protect any document found on your smartphone behind one or several passwords.

The smart and minimalist interface design in Vault makes it surprisingly simple to use all its features. The first time you start the app it'll ask you to set your password, a PIN, or a pattern to help safeguard access to the protected content and, once you've taken the first step, you just need to select which files you want to save and let Vault take care of the rest.

Vault also includes features that let you restructure the content as needed by creating and editing folders. One of the most useful features it offers is that of importing full galleries at the tap of a button, which saves an enormous amount of time and effort.

Thanks to Vault you can stop worrying whenever you lend your phone to someone and rest assured that nothing you wish not to be seen will ever been seen by anyone else.