Over 18 million people use city buses daily in major Indian cities like Mumbai, Bangalore, Chennai, Delhi, Kolkata, Pune, and Ahmedabad. A new mobile application called M4Mum provides bus route and schedule information for Mumbai to address the problems of not knowing bus numbers or having to use physical bus guides. The application is unique as a standalone transit information app, is available anytime on mobile phones by downloading in under 10 seconds using Java, and allows users to search for buses within 10 seconds with minimal keystrokes or Bluetooth use.