Here are four free apps for the iPad and iPhone that you may want to consider as millions of people observe and reflect on the events that took place ten years ago on September 11, 2001. One iPad app provides a look at the World Trade Center Twin Towers starting with its construction and continuing on to the National September 11th Memorial Site.
The 911 Memorial: Past, Present and Future
The second iPad app is a collection of photographs by photographers who were in New York City on September 11, 2001 and recorded the events of that day.
This free iPhone app is the official app of the National September 11 Memorial & Museum. It provides a tour of the Twin Towers, an exploration of the events of September 11, 2001 through photographs and a timeline.
A second free iPhone app from the National September 11 Memorial & Museum lets you explore the people lost on 9/11 whose names are on the 9/11 Memorial at the World Trade Center.