Its a freeware Registry Cleaner Look at this image below
And to answer your question it doesnt have a trail or Purchase version
But you should just give it a try
MalwareBytes + Avg + Threat Fire = VIRUS KILLER!!
--------------------------------------------------------------
ANOTHER EDIT : These are Well Known Anti Viruses and CLEANERS
You should just download Malware Bytes, Its free and Will Remove Any Viruses In your registry and Folders Etc Heres the
Link Below
http://www.malwarebytes.org/mbam.php
And Click on Download Free Version
You should also download AVG Anti virus it is as good as Norton and Its Free!!!
Link Below...
Not sure about other models of Pi4 but the Pi 4 B with 8GBs OCed to 2Ghz handles PSP really great except like 1 game I found and it is playable it just looks bad lol Motor Storm Arctic something or other.