You've read (or closely skimmed) the review, you've watched the video -- now it's time to fire up your downloading finger and see for yourself. The latest version of Apple OS X just hit the Mac App Store, carrying a a modest $20 price tag. Of course, this round is download-only, so if you want to get your grubby paws on the desktop version of AirPlay Monitoring, Messages, Share Sheets and the rest of those 200+ features, this is the only way to do it. Update: Looks like the big cat is "Temporarily Unavailable" for download. We'll let you know when that's not the case.