App is good, but service is completely unreliable. TaxiForSure stranded me on Dec 31, 2014 by NOT picking me up from the Rajiv Gandhi International Airport in Hyderabad in the night! This was a confirmed booking from TaxiForSure.
They simply cancelled the booking without advance warning within an hour of the scheduled booking. Apart from a sorry note they did not do anything to correct my situation.
Beware of booking their service to and from the airport!