Protect not only your WhatsApp conversations, but also the shared images. In the paid version, you can even customize a fake WhatsApp page so that no one notices that the content is locked.
Functions:
Gives you the ability to block access to WhatsApp, settings, installer, and Google Play. Also restricts access to the image gallery and videos.
How to use:
Set a password to access the application. Explore and activate the options that best fit your privacy needs.