By Jim Karpen
Spyglass ($0.99) is yet another creative use of your iPhone's camera. You can view your environment via the iPhone camera and digitally zoom in in up to 5x. In addition, the app uses augmented reality to superimpose compass and GPS information as well as horizon tilt right over the live camera feed. You can also enable the maps feature and have the same information superimposed on a map.You'll need an iPhone 3Gs plus an Internet connection to use the maps feature.