Scosche today introduced the Rhythm. It is a combination of a pulse monitor and an iOS app, which offers users a simple way to manage, track, and analyze their workouts. The device uses two alternating LEDs with a photo sensor to measure user’s pulse. There is also a built-in accelerometer, which enables the device to measure calories burned, speed, pace, route and distance. The Scosche Rhythm connects to your iPhone, iPod touch, or iPad via Bluetooth connectivity. Its rechargeable lithium battery lasts for up to six hours of continuous battery life. The Scosche Rhythm retails for $99.99. Watch the video after the jump.