A new app that uses a smartphone to wirelessly test for sleep apnea may be able to detect whether your snoring is just annoying or a potentially life-threatening problem.
The gold standard for diagnosing sleep apnea—a disease which affects roughly 1 in 13 Americans—requires an overnight hospital stay and may cost thousands of dollars. The patient sleeps in a strange bed, gets hooked up to a tangle of wires, and undergoes an intensive polysomnography test to count how many times a night he or she struggles to breathe.
By contrast, ApneaApp works in a patient’s own bedroom and uses inaudible sound waves emanating from the phone’s speakers to track breathing patterns without needing special equipment or sensors attached to the body.




