Until now, Jawbone's Up bands have had the best software of any fitness tracker on the market. The problem, of course, has been that if you wanted that slick app experience, you had to buy yourself some Jawbone hardware to match -- a risky proposition when the device has some documented sudden-death issues. Not anymore, though. A company spokesperson confirmed that Jawbone will be opening up its API, allowing the software to work on Android Wear smartwatches and anything running Apple's HealthKit (translation: if and when the iWatch comes, it'll be Jawbone compatible). That means going forward, you can run Jawbone's app on your smartwatch, and enjoy the software without having to wear an Up band if you didn't want to. Additionally, Up is at last coming to Windows Phone, so if you own a WP8 handset and have been eyeing the Up24, you can finally take the plunge.