OrthoGraph Architect 3D is a floor plan survey and creation CAD app on the iPad. It utilizes all the benefits of the multi-touch iPad screen that is large enough to work with, and the strong hardware of your iPad to support you on-site. Let you work on small rooms as a carpenter or large office buildings as building surveyor teams, OrthoGraph performs well in both situations.
Draw like you would do with a pencil on a paper. OrthoGraph understands it and creates a floor plan from it. Add new rooms simply by drawing the new walls. Create your multi-story document assisted with your iPad.