Satellite Eyes - Changes your Mac wallpaper to a satellite map of your local
Unsplash Wallpaper - Gorgeous wallpapers on your Mac
Spire - The first activity, breath & state of mind tracker
John's Background Switcher - Switch backgrounds to trending imgur, reddit, tumblr threads
Hum - Songwriting for iPhone
Splashy - Breathtaking, auto changing wallpaper app for macOS, Windows, Linux, iOS & Android