The 1.0 version of DesktopPictureTimer for Mac was provided as a free download on our website. The actual developer of this free Mac application is Marco Weitz. The software belongs to Theming Tools.
From the developer:
DesktopPictureTimer changes the background of your desktop at a defined time to a defined picture.The auto change of OS X must be turned off in the prefs.
You may want to check out more software for Mac, such as Wallpaperio Android Maker or Art to Desktop, which might be related to DesktopPictureTimer.