Ccleaner Pro is the paid version of this software, which adds a few key upgrades. One is the Auto Updater, allowing the software to update quietly and quickly without the user needing to visit the source site. Pro also has the ability to automatically clean files and history each time a browser is closed, keeping on top of the job at all times. The Pro version can also monitor junk files in real time, keeping everything streamlined. Anyone unsure about the cost can try a free trial before paying.