Note: Tools of this nature are often flagged by Antivirus software as "HackTools" or "PUPs" (Potentially Unwanted Programs).
Since the full version of Clean Master for PC requires a paid subscription ($15.90–$49.90) for advanced features, consider these highly-rated, free alternatives that don't require license keys: CCleaner (Free Version) clean master license key free fix
: A "free fix" can result in all your personal files being encrypted and held for a monetary ransom. Note: Tools of this nature are often flagged