Pic-a-POD is a utility application for Mac that downloads the picture of the day from a selection of web sites and optionally sets your desktop picture or wallpaper to a selected or random one of these pics.
View Today’s PODs in your browser.
Pic-a-POD for iOS is an app for iPad, iPhone or iPod Touch. It shows a list of the pictures for the current day and allows you to save any of these to your Camera Roll for use as wallpaper.
Download PODs from:
Set your desktop picture or wallpaper to any of the downloaded photos.
Change to a random desktop periodically from Pic-a-POD or from your iPhoto library (Mac only).
Browse through all the downloaded pics (Mac only).