Is It Rooted?

Rooting is the process of allowing users of smartphones, tablets and other devices running the Android mobile operating system to attain privileged control (known as root access) over various Android subsystems. As Android uses the Linux kernel, rooting an Android device gives similar access to administrative (superuser) permissions as on Linux or any other Unix-like operating system

This App will help you determine whether you device is rooted or not.

There is no extra stuff, no links, etc. Just straightforward root-check.