Technically an ipad is really just a bigger version of an ipod touch. So can you use Codea on an ipod touch?
@Rdo - Is the Touch still being produced? I have an early Touch (I think series 2) which can only get up to iOS 4.6. That may mean it will not take the Universal Codea. So, I think most people would have switched to an iPhone and the volume/interest may not be enough to support.
What version of the Touch do you have?