Hi, Writing this post for all Watch users who probably like me looking for a Good Fitness Tracker. I got a chance to go for an Outdoor walk with Watch and thought of comparing the data with Application I use all the time "Runkeeper" to record my runs and walks. Here is a detailed comparison with snapshots Activity Type : Outdoor Walk Devices : Watch with Native Activity App and iPhone with Runkeeper App I must say I am pretty happy with the accuracy of data recorded on watch. Yes, I carried my iPhone (Strapped on Arm) but it is anyways recommended to carry iPhone with you for at least for initial activities. Once my watch learn my strives I will surely post updates with similar data without iPhone as well. For now here is the side by side comparison of data recorded. PS: The timings are bit different in both because I forgot to Pause my Runkeeper app at one signal where I had to stop for some seconds. Total Calories : Difference of 33 and since Watch is using Heart Rate to calculate that, I am considering that to be more accurate. Distance : Difference of 0.06 miles. Hoping this difference would lower down with time. Average Pace: Almost Similar Please share similar data if any one of you already tried comparing it with your best running app or planning to do so.