The Latest Chat App for iPhone Needs No Internet Connection
Mobile app stores are stuffed with messaging apps from WhatsApp to Tango and their many imitators. But FireChat, released last week for the iPhone, stands out. It’s the only one that can be used without cell-phone reception.
FireChat makes use of a feature Apple introduced in the latest version of its iOS mobile software, iOS7, called multipeer connectivity. This feature allows phones to connect to one another directly using Bluetooth or Wi-Fi as an alternative to the Internet. If you’re using FireChat, its “nearby” chat room lets you exchange messages with other users within 100 feet without sending data via your cellular provider.
MIT Technology Review