[nikdaheratik]

iOS (and I'd assume Android as well) is a grab bag of technology. To learn it correctly, you'd need to learn about memory management, enough graphics to understand how to draw to the screen, interpret touches, etc. All of that is wrapped up in a complex API.

Web development has many layers to it, but each layer is pretty straightforward and it all starts and ends with producing a text string (the web page) which is a much easier concept to get your head around when you're first learning.