You can install any application on both (Android will not let you have root access, though). You can write your own software for Android and install it on your

You can install any application on both (Android will not let you have root access, though). You can write your own software for Android and install it on your phone, but it is difficult to write software on your phone for your phone. Microsoft does have a huge app store and they do charge a percentage (although for non-games, it's just 5% which seems like a bargain).