TweetWorld: Powered by Gamaray

 
TweetWorld is an Android app that provides an augmented reality view of the 20 most recent geo-coded tweets in your area. You can view the web page for a tweet's author by touching their image. Soon TweetWorld will also allow you to have a custom 3D avatar associated with your tweets. TweetWorld is powered by the Gamaray 3D Augmented Reality Browser.

→解説によると、アンドロイド携帯＋Gamarayで実現しているようだ。