Be careful downloading these so called iOS7 friendly wallpapers. I found some on an App that was updated and I downloaded it and started to use one. When I did that my 3D effect, or whatever it's called, stopped working. The wallpaper did not respond like the Apple ones when I turned the phone. What was worse is that when I saw this and changed back to the Apple wallpaper that wallpaper stopped responding to the turns like it used to. I tried the animated wallpaper too and that stopped responding so I deleted the App and any other wallpaper apps I had that i used to use. Then I did a hard restart on my phone and now the wallpapers are back to normal.
That was very strange, but I don't trust these wallpaper Apps anymore. I feel like I have to stick to the Apple ones until Apple fixes the cropping so I can uses my own wallpapers.
The Apps I had and my phone probably just didn't get along. It could have just been a fluke. I am so board of these Apple wallpapers. Consequently if you find an App that has wallpapers that work I'd be game to try it out.