59p stethoscope on iPhone proves a hit

“The stethoscope, the 200-year-old accessory without which no doctor is complete, could soon be replaced by the humdrum mobile phone. A computer scientist who wrote a program that turns an Apple iPhone into a stethoscope has made a major advance in medical technology and created a sensation among heart specialists. The application, called iStethoscope, was developed as a “bit of fun”, and has become a runaway success after being downloaded millions of times by users across the world.” Item by Jeremy Laurance in the Independent. Has lessons for all budding iPhone app entrepreneurs.