Endomondo, which has long been doing fitness tracking through GPS and accelerometer readings, has released a new app exclusively for the iPhone 5s which aims to emulate a lot of what wearable fitness trackers do. The iPhone 5s has an M7 coprocessor which can quietly hum along all day with minimal battery impact while it's tracking movement, Endomondo life uses that in order to estimate how many calories are burned throughout the day.
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