CCleaner Professional - how is it really different

CCleaner for Windows
1

Says it does "Full Cleaning" - "Cleans the entire computer!" So what does it clean that is not cleaned in the manual (non pro) version?

Says it does "Automatic Cleaning" - "Automatic background cleaning Disk space monitoring" So again, what does that really mean and how is it different?

I have used CCleaner for years. Was considering the Professional Edition, but really need to know more to make that decision.

2

Full cleaning just means it'll clean all users on the machine from the administrator's user account.

The smart cleaning section of pro will tell you when a browser has closed and if you get to a certain size of junk. This is what it means by automatic cleaning.

The pro comes with a year of priority support and automatic updates.