Calculator Vault is an app that is capable of hiding your private data as if you're storing it in a vault. It is very easy to use, and the interface is very intuitive.

Calculator Vault has a vault storage that can be used for the users to store their private, personal data, such as photos, videos, contacts, safe passwords, secure notes, and more.

On the surface, this is a standard calculator. You will have to enter the password, and then it will open to access your private file — safe and convenient!