As part of its technological advances, the Indian Railways have launched a web application at http://railradar.trainenquiry.com/.
This application uses google maps and tracks trains realtime with blue on time codes and red running late codes on the maps. It now gets very easy for finding whether a train is running late or note and where it is exactly !!
There is no mobile app for the same yet, but it could introduced soon for android, windows and apple iphones if railways can put their mind to it.