I've posted about it in the Utilities Section. viewtopic.php?f=106&t=2969. To the extent I could make sense of its code and logs my guess is that it only cleans the buildup of cache in /root. If so, it would have no effect upon the buildup of cache locally stored within the profile folders of portable web-browsers. However, it would still be of value for builtin, installed, and SFS-packaged Web-browsers which store cache in /root/.cache or elsewhere in /root.
This is a 'no-arch' application which may be used with any Puppy.