Following the Metro Paris Subway application, here is another Augmented Reality (AR) app for the iPhone 3Gs that's welcomed into the App Store: RobotVision. The Bing-powered app has interesting features which appear on top of your iPhone's camera viewer when you point at a restaurant or other places. It also displays Tweets and Flickr photos published nearby wherever you are. continued »

No wonder that augmented reality application is the biggest reason to upgrade to an iPhone 3GS, thanks to the addition of a compass to the iPhone 3GS. By using this app, you can easily find the nearby subways or track down your Twitter neighbors. Just wait until September, Apple says. continued »