Pi-hole

Pi-hole is the single most impactful privacy upgrade you can make at home for thirty-five dollars and an hour of your time. Install it on a Raspberry Pi, point your router's DNS at it, and suddenly every device on your network stops loading ads and trackers — smart TVs, game consoles, phones, laptops, everything. No app installation needed, no per-device configuration, no opt-in. The dashboard shows you exactly what's being blocked in real time, which is both fascinating and slightly terrifying. What makes Pi-hole special is its simplicity: it's DNS-level blocking, which means it catches ads on devices where you can't install ad blockers. The community-maintained blocklists are excellent and updated regularly. The only real caveat is that you need a device that runs 24/7, but a Pi Zero costs almost nothing to power. For home privacy, nothing else comes close to this price-to-impact ratio.

Best for users who are comfortable following setup instructions or running a self-hosted tool.