Secure Gallery (Pic/Video Lock) for PC is a very good app to keep certain things on your device private from prying eyes. This is a very effective app which allows you to hide pictures and videos which you do not want everyone to see. And one very nice feature of this app is that, you can lock this app by using a password or unique pattern lock method.
You can even manage pictures and videos on this app by creating new folders, moving, copying and replacing files, and even renaming them as well. And the best part about this app is that, all the features in this app are completely free! Even the launch icon is hidden in this app, so no one knows about it but you. You can even edit and select an appropriate background for the gallery that you have hidden. And with this app, pictures and videos can be directly shared via social networking sites such as Twitter and Facebook.