Apps that fall into the Health and Fitness, Medical or Lifestyle categories are always going to be some of the most popular options available on the App Store at the turn of the year. The beginning of January always seems to mark the time when people want to get their mind and body in shape and start the new year with a push towards physical fitness and improving their overall health. The runtastic Heart Rate PRO app may not offer any insight into healthy living or provide any insightful diet tips, but it does allow users to accurately measure their current resting and working rates simply by covering the rear camera lens with their finger.