This week the 9/11 Memorial Museum in New York City recognized its completion ahead of its public opening on May 21st, and today an official 9/11 Memorial Museum app for iPhone and iPod touch has been made available.

The app’s purpose is to aid museum attendees and enhance the tour experience by turning your smartphone into a personal tour guide. The primary tour, Witnessing History, is narrated by actor Robert De Niro, who has supported the Museum’s effort alongside former New York City Mayor Michael Bloomberg. The tour consists of thirteen sections total, each accompanied with a 1-3 minute narration and transcript. expand full story