Autodesk FormIt is concept design tool available for mobile (app for iPad and Android ) and accessed through web browser (BETA Launched) supports Chrome and Firefox. It is widely used by AEC professionals to capture building design concepts anytime, anywhere. It is very easy to learn and use this tool.
Use real-world site information to help create forms in context and support early design decisions with real building data. Experience a continuous Building Information Modeling (BIM) workflow by synchronizing designs in the cloud for further refinement using Autodesk Revit software products and other applications.
It is very easy to create different forms and shapes, can be shared with team members, clients using cloud storage option. Can import Google maps and check the feasibility of your model with real world or proposed building location. It is easy to adjust shadow location using effect of sun, with Months, date selection as required. Store and share designs in the cloud using Autodesk® 360 cloud services.
I tried using browser based tool on chrome. Great experience awesome tool for concept designers. I have imported Pune station map and placed my model over it. Go, try it.
More details, visit - http://autodeskformit.com