Ola is a good app for online Taxi service. I used it when I was in Chandigarh . I hired ola cab and with in few minutes Cab arrived. Driver was very polite and Cab was clean .
Also there were AC facility in cab . Driver also helped me to carry my luggage. Also when I booked my Trip I got cash back on Ola . So its really very nice to have ola in your city.