IObit stole Malwarebytes' database in the past.
IObit ripped off their database 1:1 IOBit Steals Malwarebytes' Intellectual Property - Malwarebytes News - Malwarebytes Forum .
Advanced System Optimizer is developed by SysTweak, not IObit (IObit develop Advanced SystemCare).I must admit that my answer surely is not valid for the current version, but the truth is that the version of two years ago broke my system.
If we add to its dark past (the database Malwarebytes), it makes it a brand I keep away from my computer. But again, I do not know the functioning of the current version if it is correct or not
IObit has since cleaned up their reputation, and do develop some good software. Their own anti-malware software (IObit Malware Fighter) isn't that good, but ASC Ultimate utilises the Bitdefender engine for better protection.