Yamanchu wrote:kamitoki, as far as I'm aware, the only difference between an itouch and iphone is that an itouch won't make phone calls and doesn't have a GPS. So for learning Japanese an itouch will do everything that an iphone will do, but just cheaper to buy.
The iPhone also offers on-the-go Internet access, no need to rely on hotspots -- so, for example, I can stream the latest lesson straight from the Web site on my way in to work.