We continue to work with the new ESRI Flex 2.4 release in conjunction with Flash Builder 4.5.1 to build mobile apps. The attraction of Mobile Air is that one code base can be installed on multiple mobile platforms. That is potentially a big cost saving. To prove a point, we built an ArcGIS IPad app, first in Flex then ported it to mobile AIR. We have now taken that code base and installed it on an Android device, in this case the Samsung Infuse. Here is a video of the application: