A new iPhone application has been released that purports to measure how competent you are in the sack.

The ‘‘Passion’’ app uses the phone’s built-in accelerometer, used to sense motion, as well as the device’s microphone and timer.

The new Passion app for the iPhone.

Simply place the phone on the bed or in a pocket before intercourse and, at the end of the horizontal dance, the phone will give you a rating out of 10 based on three criteria: duration, orgasm and activity.

The timer measures duration, while the accelerometer measures activity and the microphone measures the orgasm.