autodesk

If you’ve not seen it, Autodesk has a page dedicated to their mobile applications:

http://usa.autodesk.com/adsk/servlet/pc/index?siteID=123112&id=16953811

There are some great Apps there. Some I’d recommend exploring include  Autodesk BIM 360 Glue Mobile App,  Autodesk FormIt,  Autodesk SketchBook Mobile, and AutoCAD WS.