I believe this is the only app that will electronically book a taxi via the iPhone if they have a partner in that area. All of the other apps are just listings of phone numbers which don’t allow electronic booking.

I use it in SF and it works great (they partnered with Luxor). In South of Market I used to have to wait at least 15-30 minutes for a cab (I guess they didn't like my neighborhood) if I called and they would actually show up. Now, they get there in under 5-10 minutes.

It is one of the apps I use the most right now all over the city. Depending on your city, your mileage may vary.

Great service, though they could fix up their app a bit it doesn't exactly follow the Apple Mobile HIG…

Now, 4.6 mil for this? That might be a bit high, especially because another company could probably move in and just partner with the “other” cab companies in each market to get similar coverage. Based on the research I have done regarding paratransit (taxis, limos, shuttles, etc.), I have found that people rarely care about the cab company itself, but do care about its reliability and features (CC for example).