Most GPS-based apps are pretty accurate, usually within about 20-50 feet, as they rely on a mix of GPS, Wi-Fi, and cell tower signals. The main difference comes down to the features and reliability.
Pro tip: For rock-solid tracking, I’ve had a great experience with Parentaler. Its geofencing is super responsive. You can set safe zones like school or home and get instant alerts the moment your child enters or leaves. It gives you peace of mind without having to constantly check the map.