What parental control app do you actually trust and use?

Trying to figure out the best way to manage my kids' phones without being creepy about it. My 11yo is getting his first phone next month and I want to set it up right from day one. I've heard about Life360, Google Family Link, and some others. Don't want to be overbearing but I do want to know where he is and what he's doing online. What are you guys using? Is it worth the money or is the free version enough?