Another very cool iPhone app. Instant Heart Rate measures your pulse by using the iPhone’s camera to detect changes in blood flow near the surface of the skin. It works….I checked it against taking my heart rate manually and it’s spot on. The reviews seem to support this accuracy. Nice simple user interface too. And only a buck! Since I use RunKeeper to track my workouts, it’s a natural to also take the pulse at the beginning and end of a workout when I’m also looking at RunKeeper’s data. Check out the developer’s web site, here. Get it at the App Store on iTunes.

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