One of the biggest issues around Nike+ was the requirement to buy specific shoes no body actually wanted. So it’s great to see they’ve now opened up a little of the power from Nike+ to anyone with an iPhone, it will cost you, but at $1.99 its very very cheap. I suspect in some ways Nike is fending off the RunKeeper iPhone app, which has had some great success over the last 12 months, along with a number of other GPS performance tracking apps and even physical products that have hit the shelves this year. Has anyone given this a workout yet? Click here to download from iTunes.