Shameless plug: I made an app for that. It's called Scalar (http://scalarapp.com http://scalarapp.com). It takes a different approach to handling calculations t

Shameless plug: I made an app for that. It's called Scalar (http://scalarapp.com http://scalarapp.com). It takes a different approach to handling calculations than Excel or Grid (abandons the table structure completely), but hey, unlike Grid founders I wasn't on Microsoft Excel team :)