I need an App only for the Android Smartphone.

I would like you to build it.

I am looking small app for android that install on android and allow to access all files and folder in interactive mode to server 

So can we make Phone FTP server then use DDNS and show all folders and files on webpanel (website) so we can take backup (download file or folder) 

If u can show small poc that will be great 

Thanks

Note: Dont bid if u cannt do task, dont waste your time and my