iOS developer required to create additional features for our app

We are looking for an experienced iOS developer to create additional features for our already existing application. Our app is a very simple single view project that presents a series of text boxes for the user to introduce numeric values and then perform some simple calculations. Once all calculations are done and presented to the user in the same view (this is already done), we need: - To allow the user to store this view on its own device, preferably in a pdf file. - To allow the user to forward a pdf file to a certain email address (specified at a parameters bundle that is already existing and working ok), containing the app single and only view. - To implement view zoom capabilities to our application, in respond to the common multi-touch gesture for zooming in and out. To get a better idea, please find attached a screenshot of our current app. Please note: the use of UIGetScreenImage() is not accepted, as Apple is currently not accepting the apps that are using it.