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    If you go to the Freedom Trail. . .

    These smartphone apps guide you along the Freedom Trail:

    Tour Boston’s Freedom Trail. The best of the choices, this app from Know It All Tours features professionally produced video clips and audio snippets. Profiles of 45 points of interest include information on hours of operation, handicap accessibility, and restroom availability. A GPS-enabled map pinpoints location. Available for Android and iPhone. $2.99

    Freedom Trail Official App. This app from the Freedom Trail Foundation, the nonprofit that promotes and supports the walking trail, is not overly robust for its price. Brief descriptions of each stop are identical to those on the foundation’s website, and the app lacks audio, video, and a GPS-enabled map. The best features are the trivia on each Freedom Trail stop. Available on Android and iPhone. $4.99


    NPS Boston. This well-produced app from the National Park Service features descriptions, photographs, and audio clips for each Freedom Trail location along with those on the Black Heritage Trail. The GPS-enabled map brings those stylish National Park Service paper maps of the Freedom Trail to life, and itineraries include estimated walk times between stops. Includes a listing of daily events. Available on Android and iPhone. Free

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    Mapping Revolutionary Boston. Step back in time with this app produced by the Bostonian Society and Wellesley College. Superimposed on a 1769 Colonial map of Boston as well as overlaid on a present-day map are colored pins relating to some of the characters and events that forged the Revolution. Learn fun facts from the former locations of John Singleton Copley’s farm and the Bunch of Grapes Tavern to the earthquake that shook Boston in 1755. Available on iPhone. Free

    History Here. Produced by the History Channel, this app features descriptions, photographs, and links to more information for thousands of historical sites around the country and dozens of landmarks in the Boston area, including the Freedom Trail. Search by current location or enter a zip code to find nearby historical sites that are displayed as pins on a GPS-enabled map. Available on Android and iPhone. Free

    Field Trip. Similar to History Here, this app from Google supplements hyperlocal historical sites with such information as movie filming locations and
    Zagat-reviewed restaurants. When running in the background, Field Trip can instantly send notifications of sites in the vicinity and even read descriptions to you. Historical photographs of bygone buildings and streetscapes transport you to earlier times. Available on Android and iPhone. Free