AutoCAD WS has been available for the iPhone and iPad for some time but a while back it become available for Android too.
What is AutoCAD WS? The official mobile variant of Autodesk (leader in 3D design software for manufacturing, building, construction, engineering, and entertainment), which can be used to edit and show off your AutoCAD files with your Android device while you’re out and also to use the web service’s cloud storage to keep everything in sync.
Drawings can also be saved locally so you can work in the field without an Internet connection. Moreover, AutoCAD WS can be used as markup tool so you can work on your designs while you are on the go.
Note: Requires Android 2.1 or above. Recommended devices include: 1GHz processor, 512MB RAM.
If you’re interested, you can download AutoCAD WS from the Android Market by searching for ‘autocad ws’.