Wahoo Fitness has rolled out its new Blue SC Bluetooth 4.0 Bike Speed and Cadence Sensor for the iPhone 4S. The small, bike-mounted sensor works in conjunction with various apps—including the company’s own Fitness Odometer App and third-party offerings including Cyclemeter and Strava—to provide odometer functionality and workout data including speed, cadence, location, map, time, pace, calories, and workout history. The sensor also…