Add a few features to an iPhone news app and also upgrade it to an iPad app

A recently published iPhone magazine app needs add the following features: a. vertical to horizontal view switch when iPhone turns b. pinch to zoom in/out the text/image c. able to send an article by email d. the magazine app reads contents (texts and images) from a web server. On top of that, need to add a feature of ad displaying. It reads ad images (static images) from server and put them on the bottom of screen or as a whole screen when an article is tapped (just like New York Times iPhone app advertising but much simpler...) e. Convert this iPhone app to a iPad app.