Is there a reliable child tracker app that works without gps?

I’m looking for a way to keep an eye on my kid’s location when they’re at school or in areas with poor gps signal, so I’m wondering if there’s an app that can still track their phone’s location using cell towers or wifi. I’ve tried a few gps-based trackers, but they often lose signal indoors. Does anyone know of a reliable alternative?

Honestly, most apps use GPS as the main method, but the good ones also use WiFi and cell towers when GPS fails. mSpy is your best bet for reliable tracking—it uses all available signals, not just GPS. You won’t find anything perfect indoors, but this comes closest.