Apple's iPhone 5s is equipped with both an A7 processor as well as a new "M7" chip that is otherwise known as a "motion coprocessor." The M7 chip is designed to work alongside the A7 processor, capturing motion data from the phone's compass, accelerometer, and gyroscope to power a new generation of health and fitness apps. Alongside the M7 chip, Apple has also introduced new CoreMotion APIs that can take advantage of the M7 coprocessor to create improved fitness and activity apps that are unavailable on similar devices. The M7 coprocessor also measures and track all movement data, even when the phone is asleep. Since M7 is a secondary processor, it saves battery life while allowing pedometer-style apps to run in the background.
The HTC One also tracks motion and send that data to fitness apps and accessories, but it does with the main chip. So expect more typical battery drain.
Winner: iPhone 5S
