I could buy it as a PROMO today for $8.- - but Is it worth it?
Sweeping disk hogs:
I already have an App for that task, called WhatSize ($13.-).
This feature here is really not worth any $$$ at all.
... get it free from OmniGroup: OmniDiskSweeper
... or get PRO with WhatSize (id-design, inc.)
Finding duplicates:
well I dont use such a tool yet (albeit I sure have some duplicates on my HDD's - nothing wrong with that so far).
What would be interesting, are the metadata of files, that are named exactly the same...
well to keep it short: The User Interface of Sponge for that task is a big LOL.
Removing applications:
that is the only thing that looks promising, but I dont have any comparison, because I do it manually (when needed).
It seems to me that is has very long to find my Apps on my HDD (even if all is at its right place). Would be nice to sort my Apps by places, where they are stored. (OK, Sorry - I am a Power User)
But nevertheless, it does a poor job in finding all the Software bits stored in my User Library. What's the deal, if I have to do it again manually, afterwards ??
I cease my case and recommend reading the comment below from DON MORRIS.