Calculator - Vault For Hide Photo Video & App Lock is an awesome photo gallery, photo lock, video lock, and privacy guard. With this app, you can make your files inaccessible to everyone.

First, make sure that the app you are installing is the one you are talking about. If it is not the right one, it will not work.

Next, choose the photo or video that you want to hide. If you want to hide a photo, select the folder in which you want to save it.

Now, you need to enter the secret code. You have to remember this code, as it is the key to opening your gallery.

That's all. You can now enjoy your private photos and videos, and no one will be able to open them unless they have the code that you have given them.

If you are using a video, make sure that the folder in which you want to save it has the correct permissions.