From the Mac App Store page on Apple.com "Buy, download, and even redownload. You can install apps on every Mac you use and even download them again. This is especially convenient when you buy a new Mac and want to load it with apps you already own." I assume this means that all Apps are multi-license to the same owner, i.e. you can install an app on as many machines as you own, so a household with an iMac and a MacBook Air and a MacBook Pro only has to pay once for the same app. Why then does Apple continue to list iLife on their store for $49 for a single user and $79 for a family pack when you can install iPhoto, iMovie and Garageband for $14.99 each, or $45 on all your machines. I suppose the only downside to this would be kids, etc, where you don't want to authorize your Apple ID and CC on their machines, but if you own a desktop and laptop yourself, why wouldn't you just pay once?