Circle of 6 was born out of the 2011 "Apps Against Abuse" challenge, a partnership between the Office of the Vice President, Department of Health and Human Services and the White House Office of Science and Technology Policy. Kainaz Amaria/NPR hide caption

itoggle caption Kainaz Amaria/NPR

Taxi drivers protest against Uber, an on-demand car service app, during a 24-hour strike July 1 in Barcelona, Spain. They say it undercuts their business and are calling for the government to ban it. David Ramos/Getty Images hide caption

itoggle caption David Ramos/Getty Images

An Aymara woman prepares to take part in a pageant in La Paz, Bolivia, in 2013. Jaqi-Aru, a community of volunteers is working on translating the Facebook interface in the indigenous language of Aymara. Juan Karita/AP hide caption

itoggle caption Juan Karita/AP

The BACTrack Vio keychain breathalyzer and app on the iPhone at NPR headquarters in Washington, D.C. A public health researcher says tools like this could help people make better decisions about alcohol use. Meredith Rizzo/NPR hide caption

itoggle caption Meredith Rizzo/NPR