In a nutshell, no. The free version is just a complete scam. Although it does the scanning of your system for any malware present before installing the software, it cannot do anything about it. It can act as a complement tool with any other anti-virus software, but that is the end. You will not have any form of protection installing Malwarebytes Free anti-virus. It is very much recommended to upgrade your account. Malwarebytes always give out Black Friday discounts from time to time. The best ones are at the time of Malwarebytes Black Friday Sale.