Iroot Apk For Android 4.4.2 Download
Cdztattoo Barreto
Beside what everyone mentioned,One super easy way would also be installing an app from Google Play that requires root access.I suggest DroidWall, which is a must-have firewall for android. Install it, and hit apply rules. If not rooted, it will tell you, and will fail to apply rule.
Although the above mentioned apps are one of the best apps to root android without PC, however, if for some reason you are still unable to perform Android root, i.e., say you can't install custom recovery or your device is not supported by the software, there is still another way to give it a shot. You can also try rooting using a PC. PC rooting doesn't require you to install apk files on your Android phone. Instead you install software on your PC and connect your Android device to the software to perform root.