The software will show you what it's looking for, and tell you what it's found, so that you don't need to worry about it accidentally deleting something important. There are a host of files that might once have been useful, or never been useful at all, that are probably sitting in your storage and taking up space that could be much better used. One of the key ways it does that is to find everything unnecessary on your computer, and allow you to quickly delete it.
That means you can get on with the important stuff while the software ensures that everything is working as it should be. By doing so, it looks to make it as good as new.
The point of CleanMyMac is to search through your computer and find that junk and trash inside your computer – wherever that is – and clear it out.
