Android and iOS Magazine Sharing

I've got both an iPad and a Nexus 7. I've grabbed a handful of issues of magazines on each. I haven't found a way to have them work across platforms though. Does anyone know if I can do this and if so, how?

For example, if I pick up Wired on Google Play, can I read the issue I just paid for on iPad? If grab Men's Health from Newstand, can I view it on my Nexus?

Thanks in advance!