I started to develop an iPhone App for a client but the binary not yet submitted to Apple. My client asked me whether they can run the iPhone App also on the iPad. I am not sure what to answer. I am away from home and cannot even check how this all works in XCode. I wonder whether I have to submit two binaries two Apple - one for iPhone and one for iPad - or how this all works? If somebody with experience can explain me. Basically I need to figure out how much more effort I have to consider if it is only making the app work on the iPad. I do not mean the effort to redesign the whole app being a real "iPad app". Just to make it work and when somebody downloads the app and it can be for an iPhone and for an iPad and it does not matter.