Calculated values in PHP Finance

We have just released a new version of PHP Finance Manager. It has new updated dashboard page and new conceptual feature - calculated values.

These are variables which can be displayed along with the query results or functions calculated using variables, income and expenses categories. Functions' results are recalculated each time their operands change and stored in database.

Please let me know what you think about this feature. http://www.greedyduck.net