It says that everything is okay and as it should be and nothing needs to be done. What was the name of the application again, "ap Check"? Or did you just use Disk Utility.
And if Disk Utility does not report a problem, then everything will probably be alright, the developers of CheckUp want your money anyway, since former Windows users are their prey.
Example for using Mac OS X' built in software to do what other applications cannot: