A free app for Android, by GreatStuffApps.

Hide Photos and Videos is a handy utility to help you to create a Secret folder for storing your photos and videos. It keeps your photos and videos safe from the eyes of others.

This app is easy to use. First, select a folder from the list to browse through the files. Once you are in the folder, you can choose one or many files to hide. After that, just click “Hide” button to complete the task.

If you wish to restore your hidden photos and videos, you may do so by  going to the app’s invisible section. And then, access the specific folder and choose the option to unhide it.