Calculator Lock: Hide App is a free Android application developed by Eco Mobile. It is a useful utility that allows users to keep their personal information and files secure on their smartphones. With this app, users can protect their secret photos and videos by setting up a 4-digit PIN.

One of the main features of Calculator Lock: Hide App is its ability to function as a regular calculator, allowing users to perform math operations. This makes it a discreet and inconspicuous way to hide and protect sensitive information. No one can access the hidden files without the user's permission.

In addition to its calculator functionality, Calculator Lock: Hide App offers other useful features. Users can take photos and record videos directly within the app, and these files can be hidden from prying eyes. The app also allows users to play videos, add notes, and store contacts in a secure place.

Overall, Calculator Lock: Hide App is a reliable tool for keeping personal information private. It provides a simple and intuitive interface, ensuring a smooth user experience. However, it is important to note that all files are stored only on the user's device, so it is recommended to backup hidden files before transferring to a new device or performing a factory reset.

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