I've been using Classcharts for my seating charts for three years and I've really liked it. I'm able to upload pictures, include individual student data, and set up multiple charts for classes. All good stuff.
I tried using the behavior management aspect, but it doesn't fit my teaching style to be constantly marking students up or down. With limited wifi in my classroom, it usually ends up being more of a distration than the students were, and I end up wasting too much time.
There is no way I can justify paying for your service that I have used for free for so long. Thanks for the ride. I wish there was something available for the limited users like myself, but I'll figure something out.