See how healthy your lungs are -- just blow into your phone

Today, patients with chronic lung conditions such as cystic fibrosis or asthma can't easily monitor how their airways are doing. Instead, they have to go to the doctor's office and blow into a special device called a spirometer as hard and fast as they can.

SpiroSmart is a research app that enables users to test lung function without any additional hardware beyond a smartphone.

(Credit: S. Patel, Univ. of Washington)

So for the past two-plus years, grad students at the University of Washington in Seattle have been working to develop an app that can measure lung function just as accurately but without the need for additional hardware. (Existing apps either require hardware or are for entertainment purposes only.)

In other words, they've been trying to turn a smartphone into a spirometer.

Now, the electrical engineering and computer science researchers are unveiling their SpiroSmart app, which they tested on 52 "mostly healthy" volunteers, and which came within 5.1 percent of a commercial, portable spirometer that costs thousands of dollars. (They say that the... [Read more]