This is just a launcher for App Ops that is present in Android 4.3 and 4.4.x, and this doesn’t work on all devices, and for some devices it will require root for some it will work without root.
App Ops is a new feature introduced by Android 4.3 to manage permissions of apps. It can help you to secure your android device and protect your privacy.
No need to give every permission to an application.
More information can be found on the GitHub repository.