Recordable is a little program that does nothing at its own time. However, it is completely necessary when your screen recorder completes the installation of a root, which is an Android app that records your Android device's screen without root.
To use the recording, you only need to follow the instructions given during installation. Basically, you need to install the necessary driver, which includes the program, and connect your Android device with your computer using a USB cable.
Again, the record does not do absolutely nothing in itself, but it's a completely essential supplement if the Free Screen Recorder does not want any root user to be able to use the app that does not root their Android devices.