One very negative review here
. But the company did post a comment.
In general, the software seems unnecessary with the modern OS X. Apple's iCloud and Find My Mac can do what their "security" component claims. Hard drive optimization is not supposed to be necessary with OS X, and I'm always leery of claims to speed up my Mac using software. Put in a faster hard drive or more RAM, sure; but via software, not so sure.
What about this software is appealing to you?
On a Mac since 1984.
Currently: 27" iMacs, Macbook Air, macOS 10.14.x,; iPhones, iPods and iPads galore!