Just in time for the 10th anniversary of the attack on the World Trade Center, an area man has successfully restored the Twin Towers to the NYC skyline. The "augmented reality app" has been in development since early summer, when Greenpoint resident Brian August began raising money through Kickstarter. He soon gathered $25,000, and a Chicago-based company made his dream come true. Here's a video showing how it works:

“This is an artist’s rendering of the buildings, a couple of paint strokes, and that’s enough,” August tells Brooklyn Paper, adding that he intentionally left out details or interiors, because otherwise the app "would get too creepy." According to his website, it launches today, but the links to download it seem faulty. In the meantime, satisfy your craving for 9/11 smart phone functions with these other unforgettable apps:

• The 9/11 Memorial: Past, Present and Future is, according to the Observer, an "absorbing" look at the construction of the Twin Towers, their destruction, and the aftermath, comprised of 400 still photographs and hours of video clips. Available only for iPad, it was put together by Steve Rosenbaum, a documentary film producer and web developer who used many of the images for his 2002 documentary, 7 Days in September, which the Times deemed "almost unbearably powerful." It's free until September 12th, after which it'll cost $9.99.
• The official 9/11 Memorial application, called "Explore 9/11," is free for iOS devices and was created by the National September 11th Memorial & Museum. It features an audio and photo tour around the site, with narration by first responders and eyewitnesses.
• The Alliance for Downtown New York has released a free mobile app to provide updates on events, programming and ceremony details for the 10th anniversary of the attacks. The app is supported on iPhone and iPad platforms, and will offer up-to-date alerts about road closures, ceremonies, events, and other important information over the coming week.
• The 9/11 Day of Service Android app consists of a map that shows you how businesses will commemorate the day, but it doesn't seem to be very user-friendly, and needs more volunteer-type activities. (The website for New York Cares has a lot of options for those who want to do some volunteering.)