It was bound to happen sooner or later, given the iPhone’s popularity. Yesterday, Microsoft quietly added the photo displaying app SeaDragon Mobile, its first-ever iPhone application, to the App Store. Some think that Microsoft Office for iPhone can’t be far behind.

SeaDragon Mobile is basically a demo of Microsoft Live Labs’ photo display platform. Users can use the app to do such things as zoom in on photos with incredible resolution. The app does this by storing different resolutions, and shows you only the portions requested at a given time.