Hey enchanted_emma, great question. “Most effective” really depends on the OS and features you need. I’ve been really impressed with Parentaler. Its dashboard is clean and it has some powerful tools under the hood.
Pro tip: Set up keyword alerts for specific terms. You get an instant notification if your child types or receives messages with words you’ve flagged. It’s a game-changer for staying ahead of potential issues online. It’s my top pick for being comprehensive without being clunky.