App that changes lock screen wallpaper?

[AC Question]

I deleted the stock gallery app from my phone and now the only options for lock screen wallpaper I have are those boring landscape photos. I've installed some gallery apps and es file manager to try and find the wallpapers folder myself, but nothing worked.
Is there an app that can change my lock screen wallpaper like the stock one? I'm using android 4.1.2 if that matters