The key benefit of Android is apps are built to scale to the myriad of different screen resolutions. The challenge I run into sometimes is to know do I buy the HD version or the non-HD version of the app. A quick email to the developer can help. Plus the Play store will always tell you if the apps is supported on your device just in case so you will be ok. I know on iOS there are still many, many apps that don't support the iP5 and leave the black bars at the top and bottom. I'm sure that will be enforced soon enough.