What about Clean My Mac 3?

I still have DW, but haven't needed it since Yosemite. Aside from that, it was never optimized as a boot up solution - it only worked reliably if I ran it from my clone which had it installed (in fact, at some point, you simply could not use it as a boot up disk because it did not work). They may have worked that out - or not; as I said, I haven't had a need for it (or any other utility like it) for some time. They were good at repairing the disk directory; however, I do not know if it would actually still work in Sierra because of the built in SIP.

https://support.apple.com/en-us/HT204899

I used for a while with no problems then noticed fans operating more then normal, even when screen was down on charge, getting overly hot etc, looked at activity monitor to see Clean my mac3 using up to (sometimes more) 50% of CPU. Since removing temps are normal no more constant fans, and battery life has improved too

For a number of years Time Machine would not work on my MacBook Pro. Brought it in for service numerous times to Apple certified repair techs. Problem remained through two OS upgrades. Used CleanMyMac 3 before installing Sierra. Time Machine works well now and PowerBook much faster. May have been Sierra but I have always thought that I had some bad code that techs and Disk Utilty were not able to find so CleanMyMac I think probably fixed it.

How strange?

Experienced users of this forum consistently recommend against this type of app and this particular one.

Every now and then someone joins the forum and makes one post saying how they had a good experience. How come it's always the inexperienced posters, with one post, who recommend it?

Never could figure that out.

Because it's junk.

For a number of years Time Machine would not work on my MacBook Pro

Unless you had a corrupt/bad OS install - which would have been easily fixed by an erase/clean install (or were using a wrongly formatted external drive), that is absolute and complete nonsense.

It's also interesting that you claim to be using Sierra on a Powerbook (which is not possible).

A casual glance on these forums can tell you that CMM has been the root cause of problems from countless mac users and it's removal has in these cases rectified the problem. You cant throw a proverbial stone in this forum without coming across this.

I suspect a any shop that keeps known malware in its repair repertoire may perhaps be seeding repeat customers.

Contrary to what JimmyCMPIT says, CleanMyMac is not malware. Perhaps the guy is thinking about MacKeeper, which absolutely is malware.

MacWorld gave CleanMyMac four stars, and it has also been bundled with some well-known and reliable products, such as Parallels Desktop.

The thing about CleanMyMac is that it must be used judiciously and not treated like some magic bullet. Getting rid of such things as duplicate files can be a good thing, at least for everyday consumers, but pros may have a lot of necessary duplicates, an example being the same image in multiple resource folders for a set of animations or websites.

As for me, I have it but I don't use it because I've got a couple of decades' experience in power-user / corporate IT work and I know how to handle a lot of this stuff without this type of app. For others, if you get it in a bundle, take a look at it and see if there is anything useful. Think it over and then, if do you want to use it, don't just blast away. Do a full backup of your drive(s) and be prepared to do a restore if you have any issues.

You're correct in that it is not strictly speaking, "malware". Neither is MacKeeper, for that matter.

Both of them are pure crap that will do more harm than good and use questionable marketing tactics to sucker people into buying their useless, garbage software.

MacWorld gave CleanMyMac four stars, and it has also been bundled with some well-known and reliable products, such as Parallels Desktop.

That is called clever marketing - nothing more and nothing less. I don't blindly believe online ratings or reviews which are mostly paid for - for $5 - 10, someone will write a glowing review of anything (that's the current rate). And, with an offer you can't refuse, I'll easily be able to convince you to include my app with yours.

FWIW, thanks for mentioning that Parallels includes it - that is good to know. Unless it is obvious before an install that there is something other/additional than what I purchased/expect being installed, there better be an option for me to decline or I'll be taking both companies to task. I do not allow installs of anything that I am not aware of or wish to purchase/install.

Out of curiosity, I just checked and there is no mention of CMM; however, there is mention of other junkware I would never expose my Mac to:

http://www.parallels.com/black-friday-bundle/

So, I appreciate you mentioning this - I will never consider Paralells.

Hi Apple :
I have tested some of the MacPaw software, and just found:

21a9e71928d9cd43 stream 0 0 21a9e71928f764ab 0 0 0 /var/run/com.macpaw.CleanMyMac3.Agent.socket

So they keep an open socket to me, and can spy on everything.

Please place them in the category of spyware or MacOS becomes just as leaky as Windows.

Answer: Get rid of everything, and every trace of Macpaw and stay away, it is spyware.

Apple does not participate here - we are all other users like you. If you'd like to send feedback to Apple, you can use this link:

www.apple.com/feedback

Hello Knuthf,

Having an open socket is not malicious. That is a perfectly legitimate method for communication between different parts of an app.

I have been railing against "clean up" apps here on Apple Support Communities for years on the premise that Macs don't need to be "cleaned up". Unfortunately, the latest version of macOS, Sierra, now includes its own "clean up" functionality.

Clean My Mac is not spyware, but you are correct that it is another step towards making the Mac indistinguishable from Windows.

Had it been that easy...

Simply: If some code X that I have tried to se if it works, then makes a socket this is malicious code.

If you communicate between applications - "apps" as you call them, you have to install these "apps" and make them visible in the Activity Manager. MacOS will remove all TCP/IP connections that are not used - and the above is a IP6 socket stream that has been created and ready for incoming "bind()". I suggest you and everybody read the definitions of "socket" and tcp/ip communication, it is very easy on Mac and Linux, and it is safe unless you make it unsafe - and create sockets that everybody can "bind()" to and "connect()".

That leaves a simple last observation for the people in MacPaw: You have coded this on Windows, and with purpose set the sockets so they remain alive and can be reused. So not only do you spy on anyone that tries your "app" but you have coded your "apps" with wrong tcp/ip interface - for Windows. Now: How do you expect to be able to identify silly leftover files on a Mac? Yes - Unix / MacOS supports "SOCK_STREAM" but take a look at the options!

Please download and install EtreCheck from http://etrecheck.com/

Run it and post the report here