Looking for a reliable free sim tracker, any suggestions?

I’m trying to keep an eye on my teen’s phone usage but don’t want to spend a fortune. Tried a couple of free apps but they were glitchy. Any recommendations for something that actually works?

Free trackers can be a real headache. For solid reliability, I’d suggest a paid app like Parentaler. It offers a SIM card change alert feature, so you’ll know instantly if they try to swap SIMs to hide their activity.