Cool a handy tool to have whether youre a native or a touristn San Francisco ChroniclennUsing over 100 mapbased vintage images taken 100 years ago, Time Shutter San Francisco puts you in the shoes of someone walking through the most beautiful city in America at the dawn of 20th century.nnTime Shutter San Francisco is the perfect way to immerse oneself in the San Francisco of 100 years ago and experience it all Market Street, Chinatown and Golden Gate Park exactly as they were.nnWhether youre seeing San Francisco for the first time or have seen it every day of your life Time Shutter lets you see it in an entirely new way. Lose yourself in vistas of the bay uncrossed by the Golden Gate or Bay Bridge. Stand in the exact spot as a photographer 100 years ago, and see exactly what they saw.nnHeres how it works: nnYou use the apps geocoded map to guide you on a walking tour to many of the bestknown and loved locations throughout the city.nnThen you hold up your phone to the scene in front of you and by sliding your finger across the screen you see how that building, beach or street looked from that exact spot 100 years ago.nnEach then and now transition is coupled with a caption that brings you even deeper in to the past, evoking the smell of coal smoke from steam ships and the noise of saloons, while bringing out the backstory of the architecture, people and events that created these places. nnThe app includes:nn 146 vintage, color images of San Francisco, including all the highlights like Alcatraz, the Ferry Building, and Fishermans Wharf.n Captions that explain the architecture and history of each spot, and capture the sounds, smells and textures of a century ago.n A geocoded map that allows you to find locations near you as you walk through the city.n An opacity slider that lets you seamlessly overlay the old with the new.n Facebook, Flickr, Twitter, and email shareability.nnAlso check out the Deluxe version of San Francisco for even more stunning images