I have been introducing me in the world of mobile apps development , and in every site of freelancing I have entered the clients request that the app work for Android and iOS too.
I know that exist frameworks like PhoneGap, Titanium, etc, that allow you to develop using HTML, CSS and JavaScript to various mobile platforms avoid to re-code the app to iOS or Android, but I hear too that this frameworks have limitations relative to the platforms and it's better using the native language.
I have a client that offers me jobs of this kind, I means app to run over Android and iOS on the same time, more specifically business app. My question is :
How I can measure the cost for this business apps if I decide to develop it in Objective-C and Java, for iOs and Android respectively?