Its a android software. use can use it to transfer files between pc and mobile without wire.
*SO how this works?*
You should have a WiFi ROuter. Where your pc and mobile should be in same network. example. pc is connected via cable/ phone is connected via WiFi.In this case if you go to app, turn on the function. you will see a address. starting with 10.0.0. enter this address on computer explorer.
You can transfer just like your pen drive.
*Only this app have this function?*
no, Es file explorer also have it. its a file manager. go to remote manager section and turn on the process.
the same job can be done in this software also.