gravityforms
This theme is 100% compatible with powerful “Gravity Forms″ plugin. With the help of this plugin you can build complex custom contact forms. More info at http://www.gravityforms.com

Attention! “Gravity Forms″ plugin doesn’t come as a part of The7 Theme package. This plugin isn’t free! You should buy and install it separately.

Screenshots

Simple contact form screen

Advanced contact form screen

Calculation form screen