Use this page to update existing RATS licenses to version 8.3, or to upgrade from the standard version to the Professional version of RATS.
Note: If your serial number begins with WX (Windows) or MX (Macintosh), you have the Professional version. If it begins with WE, WP, WS (Windows), MP, or M2 (Macintosh), you have the standard version.
If you are updating from version 8.x, you might want to think about getting an Update Subscription instead.
You might also be interested in one or more of our e-courses.