Mobile Number Caller Id Finder, developed by zHorizon Apps, is a free Android application that helps users filter out spam calls and quickly identify unknown callers. This small tool allows users to find caller information, including their cell phone number, city, and state location, during incoming and outgoing calls.

The app also features a mobile number tracker that displays the caller's details on a map, along with the distance between the caller and the user. Users can see the city and state of people who call them, even if they aren't saved in their phone address book. Additionally, the app provides a compass feature that helps users know in which direction the mobile phone is moving.

With Mobile Number Caller Id Finder, users can view their current location on Google Maps and share it with friends and family. The app is free to use and offers a range of services, including phone number city, state, and operator search.

However, the app requires certain permissions, such as location and phone state, to provide caller ID information for incoming and outgoing calls. Overall, Mobile Number Caller Id Finder is a useful tool for those who receive a lot of calls from unknown numbers and want to quickly identify who is calling them.