All content for our digital subscribers is hosted on our website. The archives are found here. We do not make iPad specific versions of each issue, however our website is responsive and can be viewed comfortably on any screen.
That said, we experimented with iPad editions in the past, and have versions available for Volumes 4, 5, and 6. We did not continue developing these versions because the cost was prohibitve and visibility within iTunes low. Hosting content on our own site allows greater interaction with our customers and is more accessible for us.