Two different versions of the EPS tool have been created. The EPS-Lite version is free for you to try out in order to become familiar with the features of the tool and introduce you to the dimensions of hte EPS 'wheel' that forms the basis of the feedback you receive.
EPS2.0 is the fully featured version, and requires you to register and pay to use it.
The table below provides an overview of the features of each version:

To access the EPS-Lite version click here
To register to use the EPS2.0 version click here
(NB links open in a new window)