Do I have to install software to use AffirmX?

AffirmX is a cloud-based application that is accessible through a standard web browser. We make every effort to test the application on the most popular browsers – Internet Explorer, Firefox, Chrome, Opera and Safari. Other than a browser there is no software which needs to be installed to run the AffirmX platform.
All workpapers (reviews of submitted documents) produced by the AffirmX platform are provided as PDF files and viewable with the free Adobe Reader (http://www.adobe.com).
There are also calendars and spreadsheets that are downloadable from the application which require an application that handles either an iCal (Microsoft Outlook and most calendaring applications) or an Excel document format. These applications are very common in a modern office environment.