When comparing CarbonCopy Cloner vs RCDefaultApp, the Slant community recommends CarbonCopy Cloner for most people. In the question“What are the best Mac OSX apps for someone that's new to Apple?” CarbonCopy Cloner is ranked 10th while RCDefaultApp is ranked 24th. The most important reason people chose CarbonCopy Cloner is:
Even if you have tasks in queue, once you connect, it will begin automatically backing up for you.
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Pros
Pro Auto-Run
Even if you have tasks in queue, once you connect, it will begin automatically backing up for you.
Pro Flawless Execution
Backing up and restoring your computer are fast and easy. There's no confusion.
Pro Clear Interface
The interface is extremely streamlined. It walks you through the entire process. There are advanced options but they remain hidden until you want them.
Pro Provides missing functionality
Standard features on Windows, but not on Mac, this fixes that.
Cons
Con No Organizing Tasks
Once your tasks are in the queue, you can't reorder them. You also can't organize them into folders.
Con Last update was in 2009
But the software still works, so far no issues on El Capitan 10.11.3.