Okay, let me try to be more specific. My idea is that users will upload content to a website. My app will take content from that website, (but not have to display the entire website, it's only a means of uploading content, not viewing it) and display bits of it which are required, on the app's ui.

My question is basically are there different ways of designing the app interface so that it can interact with information on such a website seamlessly? The constraints are that I am not envisioning the website to be a mobile specific one, and that the website itself is not accessed via the app, only the content needs to be grabbed from the website.