Delhi Metro Map offline app provides information that helps in using the Metro Services and Delhi/Noida DTC Bus too. Following are the information available in App.

1) Route Between Stations
2) Change for which line
3) Change for train going towards ..
4) Total time of journey
5) Total Stations
6) Fare
7) Last and First Train timings
8) Number of stations in journey + number of times to change train
9) Information on Exit Gates
10) Noida NMRC Metro routes , Rapid metro Gurgaon Routes

Your best solution for all info on Delhi and Noida Metro.

#1 App for Delhi and Noida Metro routes / Delhi Noida DTC Bus Routes

The Delhi Metro is a rapid transit system serving Delhi and its satellite cities of Gurgaon, Noida, Faridabad, Ghaziabad, Bahadurgarh and Ballabhgarh, in the National Capital Region of India. By far the largest and busiest metro in India, and second oldest after the Kolkata Metro, it is the world's 8th longest metro system and 16th largest by ridership.[10] The network consists of eight colour-coded regular lines, running 343 kilometres (213 mi) serving 250 stations.The system has a mix of underground, at-grade, and elevated stations using both broad-gauge and standard-gauge. Delhi Metro operates over 2,700 trips daily, starting at around 05:00 and ending at 23:30 hrs.