The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From Nice Apps:
Are you tired of all your friends having photographs of UFOs, Aliens, Crop Circles and even weird lights in the sky and you not having any? Well, now you too can have your own!! With UFO Capture you can quickly and easily add any of these 20 Alien Phenomena to any picture on your iPhone, iPad or iPod Touch**! (And we'll be adding more soon!)So stop being jealous and do something about it! Make your own and fool your friends!*** DON'T FORGET TO SUBMIT YOUR PHOTOS TO THE GALLERY!***With UFO Capture, you can manipulate any photo from your photo album. After choosing an image, (or taking a new photo directly through UFO Capture) select an Alien Phenomena to superimpose onto the photo. Choose from creepy aliens, multiple UFOs, crop circles, weird lights, and more. After placing the phenomena, adjust the size, rotation, and transparency to achieve the optimum effect. Don't like the way your photo is turning out? Hit the reset button to put it back in the center of the screen for you to start over or even select a different phenomena! Save and email your creation to your friends, and let them judge for themselves!You can also submit them to us for the gallery! Check out what other people are doing with the app. From jokes to flat out creepy.http://www.ufocapture.com/gallery**The ability to take pictures is not compatible with the old iPod Touch or original iPad, for obvious reasons. But you can still use it with any photos in the photo library on your iPod Touch.