Tango allows users to make free video calls and free phone calls on the iPhone, iPod touch, iPad, and hundreds of Android phones and tablets, and provides a high quality experience over 3G, 4G, and Wi-Fi. Tango has tens of millions of people using its service in 190 countries, and delivers millions of minutes of voice and video calls a day, of which 80 percent are video. Tango's products are designed to work cross-platform, meaning iPhone users can call Android users, who can call PC users, and vice versa. Tango's technology is compatible with about 450 mobile devices, including nearly 30 tablets. The Company currently has over 70 million registered users in 190 countries and is adding more than 1.5 million users every week.