This is the best basic CAD program for the iPad. I have previously tried all the others I could find in the AppStore, but only this one comes close to my everyday PC CAD program -Intergraph Smartsketch. While at my workplace AutoCAD is the standard and I have training in it, Ive always found Smartsketch better for quick simple things like floor plans.
I took a chance with Cartomap CAD since it was $20 and had no reviews... but what a lucky strike! After about 30 minutes of playing around with it and not really looking at any instructions, I was productively making a plan of my bathroom remodel. While it takes some getting used to, most of the major features are there and work well.
The import feature leaves something to desire, which was originally what i was looking for, but there isnt a program Ive used so far on PC that can accurately import. My problem was I could not get a pre- made drawing to come in at the right scale, so none of the new work on the drawing in the program would be at the originals scale.
When making original drawings, this program is very intuitive, and the closest thing Ive found to the aforementioned Smartsketch. Especially handy is the snap function that lets you accurately pick points.
The only two problems so far (Im sure Ill find more with use) are :
1) I cant see how to print from the program. You can send a file via email, but it is still a dwg, dxf, or native format so unless you have another program that can print these formats (from the iPad) then you are stuck sending to a PC to print or doing a screen cap and printing as a photo from the iPad.
2) There is no area fill hatch function, so I cant show different materials or areas Id otherwise want to highlight.
Overall, I think future updates can only improve this great program.