IT’S the smartphone trend that’s more revolution than evolution - apps and peripheral devices that have moved beyond the novelty phase and are starting to save lives. This week’s launch of an Australian-first blood glucose meter that hooks straight into an iPhone to record and manage a person’s diabetes is the latest in a series of innovations linking specialist medical devices with everyday technology. The iBGStar device, which attaches via the iPhone’s charging port, reads blood samples taken from a finger-prick of someone with diabetes. It then logs the result in an app and provides a history showing trends of when a user’s blood sugar levels were high or low.