TouchDraw is described as 'Vector drawing application that gives you everything you need to create structured 2D vector graphics such as flow charts, graphs, diagrams, illustrations, logos and floor plans just to name a few' and is a Diagram Editor. There are more than 10 alternatives to TouchDraw for a variety of platforms, including Windows, Mac, Web-based, Linux and iPad apps. The best TouchDraw alternative is Excalidraw, which is both free and Open Source. Other great apps like TouchDraw are Pencil Project, yEd Graph Editor, Dia and Lucidchart.