This just in, from Cortexa

Our current iPhone application DOES work on the iPad and works great. We will be developing an Application specifically for the iPad in the near future. Also, we recently joined the Z-Wave Alliance and will be focusing our efforts on our Z-Wave driver so that we can work with all of the Z-Wave products.
Jesse from Cortexa

Good news for all of you looking for the latest developments in affordable Home Automation. Cortexa does not charge extra licensing fees for every add-on which is the case with every other HA product on the market today. To learn more give us a call or drop an e-mail plus check the web site. We are putting Cortexa up very soon...