Updated! One of the applications has been stealing user's browsing data.
The applications, named Dr Cleaner, Dr Antivirus and Dr UnArchiver (removed from Mac App Store) are developed by Trend Micro. Their Dr Unarchiver app was recently under the spotlight for stealing user's browser data off their Mac.
Although not confirmed that the other two apps developed by Trend Micro will take your data, we fully recommend that you uninstall them off your Mac if you have them installed. We also suggest NOT to download any Trend Micro apps, until, at least, the developers have made a comment. The website, which is still up, is yet to be updated with any messages.
We'll have a guide to the best junk cleaning apps out there, and how to clean your Mac without any "cleaner" apps. At this time, it's best not to install any cleaner apps from the Mac App Store or the internet.
[Update 1]: Just after writing, we found out all three apps mentioned have been removed from the Mac App Store. We've updated the article title.