GstarCAD MC is a complex tool to draw, edit, or send CAD files directly from your phone in a very easy way.
You don't need an Internet connection to create drawings or make changes to them, so you can create and edit anywhere and then send them later.
The program supports files with DWG, OCF, and DXF extensions, which you can set the program to open by default, including from email attachments, making it easier to access the drawings.
When making drawings, GstarCAD allows you to add fully modifiable elements such as adjustable lines, circles, and rectangles, which will help you create exactly what you need.
It also includes a color palette that you can apply to each segment and even supports fonts to do annotations in Chinese, Japanese, and Korean.
Expanding or reducing multipoints won't be a problem for GstarCAD, either, since you can also work in full-screen mode and, when it's time, download finished projects.