Develop IPHONE/IPAD Apps for existing zencart website

We need a IPHONE / IPAD Developer to create an Apps for an existing Zencart Online Store. The apps needs to be for latest IOS version and delivered as a IPA file The IPHONE/ IPAD App is required to be an app that lists all the online store products from an existing live Zencart shopping site, allowing customers to browse, view, and purchase products online via the IPHONE/ IPAD App, make payment from this IPHONE/ IPAD App. The IPHONE/ IPAD shopping cart app needs to talk to the live zencart shopping site for datafeed content such as products etc... using Web Services Note: send us links/ or info about your previous work that you have done with similiar shopping android application