My initial thought was that I would obviously use Objective C to program the app. However a work colleague suggested that I look at Appcelerator as he had used it to create his app. (The app is for Irish Leaving Certificate students. It allows them to download past exam papers to their iPhone or iPad. If you’re a 5th or 6th year student check it out at http://www.jamessugrue.ie/app.)
Another problem with these type of frameworks is that if Apple add new features, then you have to wait for your framework provider to update their product, to support the new features. In this case I think you’re better off using the standard language and APIs for the platform rather than a third party solution. Also the iPhone libraries seem fairly similar to the Mac libraries, so in future it should be straightforward enough to learn Mac programming after gaining an iOS foundation.
Given my C/C++ experience I think I will pick up Objective C quicker. I have no intention to support Android at this time so the cross platform support is not of any use to me. I’d also assume that, as most apps are developed in Objective C, that this will be more in demand by employers in future. So, Objective C it is then. How hard can it be…