4 of 15 startups building apps for healthcare

Count your calorie burn with precision!

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Body Media Armbands are unlike services that calculate calories burned solely from GPS or pedometer data.

These wearable sensors (and companion iOS and Android apps) take all into account: heart rate, perspiration, skin temperature, and heat dissipation, along with time spent lying down and sleeping. 

The accuracy rate is an unprecedented 95%.

Read it and see it works at bodymedia.com

In this 15-part series on the thrilling, disruptive potential of "mHealth," I highlight businesses using mobile technology in health care.

Leveraging the wonders of a device that's fast becoming ubiquitous – two in three people worldwide own a cell phone – a new generation of startups is building apps and add-ons that make your handheld work like high-end medical equipment.

Cheaper, sleeker, and a lot more versatile.