so i am brand new i want to put the nes games on my phone but i need to get the jail break app and the ssh app?

i have no idea what either of them do or what they are can someone please help with this.

where do i download them from?

and can i be on my computer and download them or do i need to be on the iphone and if i am on my computer does the iphone need to be connected the whole time of install or just afterwards, alright thanks a ton.