Fitness-tracking app Moves now supports the iPhone 5s' M7 chip, offers battery-saving mode on iOS 7

Thanks to an update released today, the always-on fitness app Moves will now work with the iPhone 5s' M7 motion-sensing chip. The activity tracker utilizes Apple's "motion co-processor" to track your steps taken, distance ran and more stats -- in the absence of the M7, Moves will monitor this activity via software running in the background.

Version 2.0 of the activity tracker for iOS 7 also addresses one of users' biggest complaints about the app: it includes a battery-saving mode to minimize the drain of your handset's juice. It's available to download now for $1.99, though the price will jump to $2.99 at the end of November. If you already own the previously free app, though, you won't be required to pay for the upgrade.