ZELLO WALKIE TALKIE This free app works on iPhone, Android, BlackBerry and Windows, which makes it far more useful than, for example, iPhone-only apps. The design is beautiful, simple and uncluttered — there aren’t even ads.
Like most of the best apps, Zello lets you create groups so that you can carry on something like a party-line phone call among a handful — or hundreds — of friends or collaborators. The company suggests, for example, that you can set up a Zello “room” for your company’s customers when they have questions.
What’s wild is that Zello comes prestocked with such channels from India, London, Toronto, Washington and so on. You sit there, jaw agape, and listen to people, in real time, from all over the world. You feel the same sense of wonder you felt when you were little and your dad took you down to his basement to listen to a ham radio.