Founded in September 2009, Tango is a free mobile video calling service that connects family and friends wherever they are. Tango offers high-quality video calling for iOS and Android devices and works over 3G, 4G, and Wi-Fi. More than 10 million people in 190 countries are using Tango to communicate every day, stay connected, and share special moments as they happen. Download the Tango application for free in the App Store and Android Market. Tango is based in Palo Alto, California.