Live Earth: Indian Ocean

Its amazing to see your earth from space!

It seems to be live, at least there are small changes from hour to hour and I like the pictures, however, enabling lockscreen but not wallpaper still makes my wallpaper change. Finally, the size of the app begs the question as to what exactly is happening? Simple interactive internet streaming games aren't even that big . Is this app up to no good or just inefficient or 4K images are huge?