JixiPix says VintageScene 1.0 (http://www.jixipix.com/vintage-scene/vintage-scene.html), a retro photography application, is now available on the Mac App Store. It requires Mac OS X 10.6 or later, costs US$7.99 and is available in the Graphics & Design category.
VintageScene is software for converting new photographs into retro, aged, and vintage style effects. With it you can take total control over the age, fade, distress, weathering, and tint of photos, assign paper age and color, choose an overlay or border to accentuate the age of the photo, add details, and more.
With VintageScene, you can emulate looks from the early 1800s all the way through current times. You can also: control the age and color of a photo; assign paper age and color; choose an overlay or border to accentuate the age of the photo and add details; save presets for any custom designed look; add a randomize effect to get a unique look; and create a number of combinations with over 60 built-in presets.