What are some alternatives?
When comparing WHYPAPER Wallpapers and Visuals of Earth, you can also consider the following products
Topia - Create amazing wallpapers for your iPhone
Unsplash Wallpapers for Mac (Official) - Curated, HD desktop background photos from Unsplash.
poster - Unofficial client for Instagram mobile experience on Mac.
Irvue - (previously Unsplash Wallpaper) Gorgeous wallpapers on your Mac.