The smartphone app Zello shot to the top of the Android and iPhone trending lists this week as thousands of people downloaded it in preparation for Hurricane Florence. But what is Zello, and how ...

About Zello Zello is a voice-first communication platform, powered by our industry-leading push-to-talk technology, built to improve collaboration and productivity for frontline workers.

As Hurricane Irma slams the Caribbean and heads toward Florida, walkie-talkie app Zello reportedly has climbed to the top of the iTunes App Store chart.

Social media has rapidly changed the way we experience natural disasters. Zello and Facebook are going a step farther by creating tools linking storm victims to help.