Do I have to pay to use RJL System Cleaner?

No. RJL System Cleaner is free to download and use for as long as you want. The core cleaning features work without any payment or registration.

Registration is entirely optional and unlocks power-user features like duplicate file removal, scheduled cleaning, and secure shredding. If all you need is to clean junk files and browser caches, the free version does that with no limitations.