Hi All, I have a question concerning Echo Link, and wonder if any of you who are well versed with this mode, can help me out here???

*Goal, to be able to participate in Echolink from different locations including my own home area, and other WY FI "hotspots, via WY-FI Internet Access, through the Echo Link APP, which I've downloaded to my third generation IPod Touch, complete with "earbudded, ptt enabled mic.
So why do I have to set Echolink up, on a home computer, which I never intend to access echolink with?  I have no problem with doing the "paper work" via that home computer, and having the WY-FI router/modems' software/hardware set up with whatever ports closed, opened, etc.  
***But the actual "echolinking" is to be done on the "Touch,  and its' "earbudded/PTT enabled mic, via the IPpod/IPhone APP, wherever I happen to be.
*I've lost two hard drives on two different computers to fatal crashes since last summer, and would just as soon _____Only use the IPpod for this and some other applications.  Can somebody give me some solid help here?  And please forgive me if the questions' been covered in depth somewhere else before;
But Anne Margaret an actress and recording artist from another erra, recorded a song in the early sixties, the title of which, "***I Just Don't Understand," really expresses my sentiments here, accurately:
Thanks, Danny Dyer, Wb4idu.