iPhone App

I need a app made that will let users pick through different templates and add their own text "Personalize" to the product, it will then show them what the product will look like "Proof" before buying.. So it needs to handle multi products/templates have a checkout/cart and then the proof/order will be emailed to me with where they would like the item shipped.. here is a website with an example: [login to view URL] lets you edit the text and view sample before ordering.. I would also like to own the code/app so I can use either you or someone else to make changes when required.. If app works how I want it, an android app would be next.. Please provide samples..