Maybe I'm approaching this differently since I teach college. My initial response was, "Why was that guy charging a subscription fee for a gradebook?" Granted, the gradebooks that come with the Angel and Blackboard learning management systems probably aren't as good as his was. Still, they do what I need them to and I'm not paying for them.

I always figured K-12 teachers had similar services available. Assuming they don't, it's not that big of a deal to throw together a gradebook in Excel.

I feel bad for this guy; based on the demonstration video it looks like he put an awful lot of work into producing a well-polished product. I just don't see how using it would save me any time or improve my teaching.