There has been a rumour for some time that Nike will be launching an iPhone app and while there is no official confirmation to report, screen grabs of a Nike + app have appeared around the web suggesting its only a matter of time before an official release.

French site has a number of grabs suggesting the software application is going to be similar in its execution to the Samsung MiCoach system announced earlier in the year that allows you to run with your mobile phone, capture the data and then analyse it later.

Looking at the screens it seems everything from a stopwatch to using the in-built GPS in the new iPhone 3G will be utilised giving you a chance to see how you've performed.

Sports functionality has started to become a key area in the mobile phone market in recent months with Sony Ericsson, Samsung and Nokia all offering you solutions to get you fit using your phone.

It will be interesting to see if the Nike+ solution comes with additional hardware support beyond the phone as well as how they aim to solve the problem of carrying something so large in your pocket on a run.