Mobile Tracker by number is a free GPS tracker app designed to help parents locate their children's phones in real-time. The app is available on Android and is developed by CallG. It offers accurate location tracking between parents and their kids in a private network, making it easy to add an endless number of family kids to your network and start tracking them.

The app allows you to see the complete location history of your kids for free. You can also get GPS notifications when one of your kids is nearby. The app uses both cell tracking and GPS tracking to optimize battery usage and the accuracy of the location. It doesn't consume a lot of memory and battery in the background, thanks to the advanced technology used for battery optimization.

One of the most useful features of this app is that you can find your lost or stolen phone easily using a family member's registered phone. The app works with all mobile network operators and all phones. It provides an instant notification when your kids move from one location to another, and it pinpoints their exact location and provides navigational help on a map so you can route to their location.