Does anyone know a reliable sim tracker location app for worried parents?

As a parent, I’m getting increasingly concerned about my teenager’s whereabouts when they’re out with friends, and I’m looking for a trustworthy way to keep tabs on their location via their sim card. I’ve heard mixed reviews about various tracking apps, so I’d love some recommendations from people who’ve had a good experience with this kind of thing. Is there a reliable sim-based location tracker that’s both effective and easy to use?

Most apps require installing software on the device, not just tracking via SIM. Be cautious about apps claiming to do this without proper installation.