The National September 11 Memorial and Museum created the official 9/11 Memorial application as a guide to understanding 9/11 through the eyes of those who witnessed the events. Given the sensitivity surrounding the events of 9/11, viewer discretion is advised. The app has three features:

Tour

A seven-stop walking tour of the area around the World Trade Center, accompanied by audio and photo narration. The events of the day and its aftermath are told by first responders, rescue workers, volunteers, and those who lived and worked in Lower Manhattan on 9/11. While the walking tour takes place in Lower Manhattan, the tour content is accessible to users anywhere.

Explore

View images related to the events of 9/11 and their aftermath taken nearby wherever you are. Photos may be viewed in Augmented Reality-technology mode which overlays images on the camera view. All photos were contributed to the museum by survivors and witnesses through 911history.org.

Timeline

An interactive timeline of the day’s events and aftermath. Includes links to witness photos taken during these time blocks.

The app can operate in an offline mode for non-U.S. visitors who have disabled data roaming. In this mode, all tour content is still accessible. The app includes a map of free WiFi hotspots near the tour route for downloading “Explore” photos from the vicinity.

The app is rated 9+ due to infrequent/mild realistic violence or infrequent/mild mature/suggestive themes.

For more information on the 9/11 Memorial, please visit http://www.911memorial.org/