I use this app almost everyday. great help. I use it for:-
-platform info
-metro info
-bus routes and bus numbers.
once I had to go to byculla for an exam but dint knew best route. map in the app helped me to get the route. then used it to get train timings and distance to get the best route.
I dont travel by bus a lot. but when I need to I use this app a lot for bus. best thing it has source and destination so I just need to enter source and destination and it gives bus numbers with direct and indirect routes. also shows no of stops, which allows to select bus that will take me faster.
finally, a must have app for a MUMBAIKAR.