I have started to develop a few web apps but I dont know what I should study if I want to make Android and iOS apps. Can you advise me? Thanks.
For Android java and j2me are good
and for iOS Objective c which is combination of c and c++
Both iOS and Android apps are developed in different languages.So,you need to learn both languages/framework if you want to develop apps in both of the platforms.
Android OS uses Java and iOS uses C Objective.
So,you need to be thorough with C language first as it's the base for the above two languages.
Developing Apps For iOS And Android – A Comparison -