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!

How is the data collected? How often will the map be generated?

This is more to help the client get an idea of where to locate access points in a new installation. Since the client doesn't have drawings of their sites I will be grabbing images via Google earth and attaching a scale to the image so we can place the heat maps on the image. I have 7 smaller sites I need to do this for.