Although logic dictates that smaller is better when it comes to running gear, RunKeeper, a cool iPhone app that tracks your treks via G.P.S. adds a compelling exception to that old adage. The iPhone isn’t the first thing you think of when going out for a run –

maybe a nice Nano would be a better fit – but Runkeeper is something to consider.

RunKeeper is a fairly unique product. It uses the iPhone’s G.P.S. to trace your tracks through the city. I tried it in San Francisco with varying results but it’s definitely a step up from Nike+iPod’s pedometer estimation techniques, which have ultimately failed me many times.

Nike+iPod uses the motion of your feet – or foot – to estimate the distance traveled.   Read More

By John Biggs