Both Hurricane Party and Forecast are designed to help people be more social offline, said Mr. Pinnell.

“We’re opening the door to more serendipitous connections in the real world,” he said.

The company, which has been testing the application for the past few weeks, says it is already seeing traction.

Mr. Pinnell said there are currently tens of thousands of people using the service and that roughly ten percent of its users are forecasting their whereabouts  daily.

A person needs to know someone already using the service to join it. Yet, Mr. Pinnell said, “We’re doubling the number of people using the service every week.”

via Forecast App Tells Friends Where You’re Going –