"The Passion 'app' uses the phone's motion sensors and microphone to take a series of readings during sexual intercourse.
Users simply start the programme, strap the phone to their arm or belt, and press 'stop' when lovemaking is over. The programme then gives a rating from 'bad' to 'perfect' on three criteria - duration, activity, and orgasm."
My question: do we really need an app for that?
VIA huffington post