Around 7,000 NYC cabs are currently beta testing a new e-hail app called Arro, which the industry hopes can help it get back the customers it's lost to Uber. Arro isn't the first hailing app for cabs -- it actually works quite similarly to Uber -- but the startup believes it can do better than its predecessors. Why? Because; (a) it doesn't have surge pricing, meaning you'll just have to pay whatever shows up on the meter, and (b) it has a partnership with Creative Mobile Technologies (CMT). That's the company that controls the video screens and payment systems in about half of the 20,000 green and yellow cabs in the city.