Specs are quantitative aspects of the option such as the price
Pros
Pro
Light version available
There is a cheaper light version available for those that don't need the full functionality of the app or would like to try it out without spending the more money on the more expensive version.
While not necessarily the easiest of options (really more a work around to the apps limited functionality) users can sync the apps files to a shared folder or cloud storage folder in order to have sync'd time across Mac's.