I'm terribly sorry as there is a typo error in my message. It meant to say Ubercart.
Basically we have developed an m-commerce app builder that can work standalone or integrate with any shopping cart via our API.
Each time you update Ubercart, all your product data would be fed to MobiCart who in turn would feed this to the app store.
MobiCart creates you a native m-commerce app (not just a mobile CSS) theme. We currently support the iPhone and soon the iPad, Android and BlackBerry.
We would like to work with members of the Ubercart community to build an integration between our two platforms. MobiCart is also free and open source.