Calculator Lock - Photo Vault is a free Android app developed by BingoTools. It falls under the Utilities & Tools category and provides users with a safe and secure way to hide photos, videos, and files on their devices. With advanced security technology, this app ensures the privacy of your personal data.

With Calculator Lock, you can easily lock photos and select pictures for your hidden photo vault. It allows you to hide photos from the system gallery and browse them in a safe and private album. The app supports multiple image formats such as jpg, png, and gif, giving you flexibility in securing your pictures.

In addition to photos, Calculator Lock also offers the ability to lock videos. You can hide private videos directly from your default gallery and manage them in a separate video locker. The app works with your device's storage/SD card, allowing you to import and export videos conveniently.

Furthermore, Calculator Lock provides the option to lock important files and hide them with a secret calculator locker. This ensures the security of your personal data, giving you peace of mind.

What sets Calculator Lock apart is its simple and beautiful user interface. It offers a multi-function lock, allowing you to lock important apps, hide photos, videos, and files all in one place. The app also provides security question settings for added protection.

Overall, Calculator Lock - Photo Vault is a smart security solution that offers comprehensive protection for your gallery vault. It helps you better manage your phone and life by providing a secure space for your private files. Although still in development, the app shows promise and welcomes user feedback for further improvement.