DailyPic is described as 'You like the Bing Picture of the Day? With this app, you can download them in Full-HD resolution, set them as your desktop wallpaper or lock screen and much more!' and is an app in the OS & Utilities category. There are more than 25 alternatives to DailyPic for a variety of platforms, including Windows, Mac, Linux, Android and iPhone. The best alternative is Variety Wallpaper Changer, which is both free and Open Source. Other great apps like DailyPic are John's Background Switcher (Freemium), Muzei (Free, Open Source), Splashy (Freemium) and Artpip (Freemium).
BackStory Wallpapers uses the photos in your Photos library to create beautiful backgrounds for your desktop. Select an arrangement, some albums, and maybe a filter or two. Then set the timer and let BackStory show you collages of images.
Spews stands for “Simple Process Excluding Wallpaper Switcher” and is designed to automatically switch your wallpapers on a configurable schedule. Add your image folders, choose your wallpaper options and click the enable button at the bottom.
Walyk Wallpaper Changer allow you to change your wallpapers automatically or manually. You can load files (jpg/jpeg, bmp or png format) or entire folders. You can also configure hotkeys and monitor the chantes made in a specific folder.
QuickWall was initialy launched as a wallpaper app that would set wallpapers directly from the commandline. Later due to a lot of requests from users , a theme option was added which uses pywal to generate themes from the wallpapers.