Hey LogiCSamuRai, solid question. While free browser extensions can catch the obvious stuff, they’re often easy for a tech-savvy kid to bypass. Plus, they usually don’t offer cross-device protection.
Paid services are a big step up. I use Parentaler, and its web filtering is way more robust. Pro tip: You can block entire categories of websites, add specific URLs to a blocklist, and even monitor their browser history remotely. This gives you a much clearer picture and tighter control than any free tool I’ve tested.