Ola cabs is basically an on demand taxi service. There are many more cab facilities, but OLA cabs are the best. They give first ride for free so that first you test their service. Then if you like it you can continue with the service. I heard about OLA cabs from many people as, its service is best quality and most comfortable service.
Then I tied it by own self and I am not at all shocked by their reviews as it is the best service I used till now. And yes because of its best quality n comfortable service its getting popular day by day.