So Android allows for the UI of its OS to be optimized for various screen resolutions and aspect ratios. How about apps? Do they share a common link between the OS and themselves for this resolution optimization? I'm curious in terms of tablets. If you have a 800x480 screen in 16:9. The OS's UI looks great but what about those apps? Is it strictly on an app to app basis how they will be presented? Hope the question is clear.