Vault, Encrypt/Hide Pic&Video

This app hides the functionality of a vault under a beautiful calculator shell that naturally displays a large number of mathematical formulas. In the initial state, you can set the password for the vault. After that, only by entering the correct password through the calculator can you enter the vault and browse the encrypted files. Other than that, this application looks completely like a calculator. You can enter the vault by entering the correct password and pressing the ⏎ key. When browsing encrypted pictures and videos, all operations are performed in the memory and no temporary files will be generated on the storage space, making your files more secure. . Browsing pictures and videos supports functions such as zooming in, zooming out, and rotating, allowing you to browse and view more conveniently.