Not much has been revealed of the true potential of the M7 processor that resides inside the iPhone 5S.

But if you want an idea install Argus a free app. Link to AppStore.

Quickly sign up and as if by magic up to your last 7 days steps are shown in the app. The M7 processor stores your data for up to 7 days.

And the other aspect. It uses no battery.

Here’s a look at a few days from my activity.

And if we look at a specific day it show a the time of activity too.

All you now need is a little something on your wrist. Maybe an iWatch.