Maaz is a free Android app developed by BNG MOBILE and falls under the Lifestyle category. The app allows Unitel users to make anonymous phone calls to any number by selecting from 12 different voice options, including male, female, and child voices. Users can also choose from a variety of background sounds, including traffic, music, and nature sounds, to make their calls more convincing.

One of the main features of Maaz is its ability to automatically add the numbers 444 and 443 to the beginning of the dialed number to ensure that the call is made anonymously. The app also allows users to make up to 50 calls per day, and the cost of the service is 50 MNT per day. The app offers a unique and fun way to make anonymous phone calls to friends and family, and it is perfect for those who want to play practical jokes on their loved ones or just want to have some fun.