Well, it's been a while since I last reviewed this. It's first incarnation was somewhat dangerous to use... so I'm glad to see it no longer trashes the System Receipts and mess up your Mac.
On opening the app you're presented with a number of tabs from which you can choose your cleaning options.
SYSTEM - Ok. But this basic cleaning can all be done by Onyx or Ice Clean or Main Menu.
BROWSER- Ditto. Can be done by free apps.
However there is a choice of browsers which is handy.
CHATS - Again, these are just logs. Nothing special there. Easily cleaned by free alternatives.
TORRENT - Can either be cleaned by a free app or you simply remove the Torrents yourself with a few clicks. More window dressing than anything else.
OTHER - Just a bunch of caches... again easy to re move with any free application.
MacDust is not a 'specialised cleaning' app. It simply cleans out caches, log files and temporary files. What it does is divide the cleaning between certain applications you may or may not have on your system... this is the 'specialised' part.
I'll be honest: it's not a bad application, but far too limited to ask for money especially since the likes of Onyx, IceClean and Main Menu (to name a few) do the same job and much more, such as removing .DS files, updating prebindings etc, etc.
Still, for people who don't have much Mac knowledge it probably ideal.