Hailo was a British technology platform that matched taxi drivers and passengers through its mobile phone application. Founded in London in 2011, the Hailo taxi service was available in 16 cities (as of December 2013). By May 2013, Hailo had enabled more than three million rides for passengers from over 30,000 registered taxi drivers. The Hailo Passenger App was available as a free download from the App Store and Google Play for both iOS and Android devices.