Is RJL System Cleaner registration a subscription?

No. Registration is a one-time payment of $19.99. There are no recurring charges, no annual renewals, no auto-billing, and no hidden fees.

You pay once and the registered version is yours forever. All future updates within version 1.x are included free.

Compare this to CCleaner Professional, which charges $29.95 every single year. After just one year, RJL System Cleaner has already saved you money. After two years, you have saved $39.91. After five years, you have saved $129.76.