Good, and growing...
Not sure about the one star reviews, I think its from those who dont understand the feature. Its only available on 3D touch devices (6S and 6S Plus). It only work on lock screen. This is an Apple thing, not the apps fault.
At my time on review, there were 50+ images. Most are decent, but not fill resolution (they look fuzzy). For a paid app, the images must be top notch.
Edge5346745 about
Live Wallpapers for Me., v1.0