Zello Inc.’s mobile app, which lets people use their phones like walkie-talkies, shot to the No. The app became popular last year during Hurricanes Harvey and Irma when volunteer rescue teams used it to field distress calls. Many of those same volunteers, known as the Cajun Navy, along with those from the Carolinas, are using the app to communicate with people in harm’s way. Zello CEO Bill Moore said daily use of the app has surged by a factor of 20 in the Carolinas in recent days. The app, which was released in 2012, was also popular in Egypt, Ukraine and Venezuela during times of crisis, he said.

Source: Wall Street Journal September 14, 2018 22:18 UTC