Despite Reebok being a cornerstone of the athletic scene, it hasn't been as quick off the mark as Adidas and Nike in embracing mobile apps as coaching tools. It's making up for lost time with a low-key launch of Reebok Fitness for Android and iOS. The app skips active movement tracking in favor of creating a truly varied exercise program: athletes can customize the ratios of multiple activities over a given period and manually shift the schedule if they f