I am looking for a fairly basic software to give a client an idea of their wireless heatmap for their sites. Since they don't have any site drawings I am basically looking to lay the heatmap over a shot of their buildings from Google. Obviously I will need a way to set scale to the image and adding some construction parameters would be optimal, but not mandatory. Everything I am seeing is in the $3-4K range and while I know many of them are worth their weight in gold for analyzing, they are way more than what I need for this project.

Would love to know what any of you are using or have in the past that may fit the bill. Thx!