ZenUI Launcher is a free app that replaces your regular launcher with this one made by ASUS. This application enables you to customize the whole experience by applying interesting widgets, wallpapers, smooth transitions and more. The first feature you might want to use is the built-in App Locker and using this tool you can protect application from being accessed by nosy people.
You are able to organize your apps and folders inside One layer mode which displays all of your apps on the home screen. The other mode is called Two layer mode and you will launch your apps using a shortcut. The good thing about this launcher is that you can apply a variety of themes, different customizations and you can see how they change the design thanks to its live preview mode.
This piece of software organizes your apps based on the functions that they perform. It was mentioned above the feature that lets you protect apps, but you can also hide them from your screen using the hiding tool. If you're looking to install handy apps for your smartphone you should check the Contextual App Discovery feature.