Independent developer Erwin Zwart today introduces PhotoStack Wallpaper Designer 1.0, his new wallpaper creation tool for iPhone and iPod touch devices. Design your own personal wallpapers using your own pictures. Add as many of your own pictures and arrange them using simple multitouch gestures. No designer skills are needed to make your iPhone stand out of the millions of others out there. The result is a photo-collage like wallpaper with the high resolution needed for Retina devices.