Apple’s M7 processor, currently in the iPhone 5S, iPad Air, and iPad mini with Retina display, collects data from the device’s sensors (accelerometer, gyroscope, and compass) and then provides that data to the apps.
But how accurate is an M7 processor at counting steps? To find out, I downloaded six popular step-counting apps on both an iPhone 5s and an iPhone 4s, and then carried both phones to track my steps over a few weeks. Then I took (a lot) of walks, including a few where I literally counted each step in order to compare results.
Here’s the breakdown of each app’s features and flaws.
I’ve used some of these and quickly found out something crucial – I don’t walk nearly enough.