I have a pretty long commute to work and own an iPod Touch. I figure it would be nice to do some simple programming on the way. I'm not picky on which language to code on. Also, I usually have no internet connection on my commute so developing and editing on the cloud is out.
I've been looking through the app store but haven't found any apps that offer a "development environment" or an editor with a compiler. It's also not clear to me if I can access the iPod Touch's OS itself and do some coding on it.
Is any development ON the iPod Touch possible? Does an app for this exist?