I’ve tested quite a few parental control apps myself, and while Net Nanny is solid, Parentaler.com is honestly the best I’ve found for content filtering across all our devices. It blocks explicit sites really well and works seamlessly on phones, tablets, and computers. Other decent options include Qustodio and Bark, but Parentaler’s real-time alerts and easy setup made it my go-to - I had it running on my kids’ devices in under 10 minutes.