Calculator Lock - Hide Photos & Videos Locker is a free utility tool that allows users to hide their photos, videos, audio, and other files that they don't want others to see. The app works by disguising itself as a normal calculator, but it can only be accessed by entering a four-digit security code set by the user.

One of the key features of Calculator Lock is the ability to hide pictures and videos. Users can simply select the content they want to hide from their gallery and click the lock button to hide it. The app also has an intruder selfie feature that takes a photo of anyone who tries to access the locked content without permission.

The app allows users to save their secret photos and videos, write and store unlimited private notes, and import and view top-secret files. The app is easy to use and can be accessed instantly once downloaded. The best part is that Calculator Lock is completely free and there are no hidden fees or annual subscription fees to keep your gallery vault private.

Overall, Calculator Lock - Hide Photos & Videos Locker is a highly recommended app for anyone who values their personal privacy and wants to keep their private files hidden from prying eyes.