An easy-to-use smartphone-based app could help diagnose male fertility at home, according to a study published today in Science Translational Medicine.

To do this, Dr Shafiee and colleagues developed a mobile phone app that uses the phone's camera and an inexpensive microfluidic device to measure sperm concentration and motility, along with a device to position and illuminate the sperm-containing sample. The total materials cost for the device was less than $5.