The iOS app, Memorability, which is a free app right now during its launch period, has just added a new feature -- web viewer for photo books. Check it out! Great way to share your family stories and old photos on that new iOS device you might just be getting from Santa.
Have a Windows Phone? The Relative History app allows you to carry around your family tree for referencing while researching...or when explaining the family tree to your relatives during the holidays. [Or whenever you have them cornered. ;) ]