Ok, I know that there are a few WarBook calculators out there. Brimstone and Warbook Spyer do fairly good jobs. I have done my own, which used Adric's as a base but extended it quite a bit.
One thing it tries to do is explain how several calculations (like income and defensive score) are accomplished.
Another thing it has is a combat calculator for determining enemy defensive score and giving an idea of much you should send to attack (as a percentage of your army).
What I mostly use it for (and I think many people will) is to calculate soldier purchases, temporary barracks cost and elite upgrade cost.
Please download and take a look. Even if you don't use it you may want it as a reference. For example it has a table of the different Elite units so you don't have to look them up in the Warbook help. In fact, it is very clear on all the differences in the Hero types.
I would like to get as much feedback as possible. What do you like and not like about it? What else should it do? Does it display correctly for you (WarBook look and feel)?
The only real feature I am working on next is a logging system that takes a snapshot of the kingdom's current stats. That way you can record your growth over time.
To get it, go to the Warbook Calculator's Guild and click on the link for latest Excel version.
http://www.facebook.com/group.php?gid=6121420605