Walyk wallpaper changer is an advanced utility to automatically change wallpaper of your windows desktop according to user defined specific time interval or by weekly or monthly basis. You can also select cyclic or random mode. It also has four positioning options Tile, Center, Stretch and Smart. You can add lots of pictures to rotate your computer’s desktop wallpapers. But to see the preview of any listed picture and other details like file name, size of file, dimension, file format etc. you have to click on the file. It also comes with a desktop calendar to add an Active calendar to your desktop wallpaper, and this one is its unique feature. You can also create your own Hot keys to control the fully customizable software. You can also change user interface language. You can also Insert the calendar to the desktop wallpaper, and the calendar is fully customizable so the user can modify the calendar according to their style or according to the wallpaper. But this wallpaper changer does not provide any special effect during wallpaper changing. It also doesn't support gif animation and audio files.