Satellite navigation company Garmin has released Garmin Fit, a new fitness application and accessory solution for the iPhone. The Garmin Fit app allows users to track workout metrics such as speed, pace, distance, time and calories and can also track heart rate and cadence with the help of additional Garmin hardware accessories. Along with the new Garmin Fit app the company has also introduced its ANT+ adapter for the iPhone allowing users to integrate…