Literally one of the best companion apps for the Watch out there
HeartWatch looks at all the data your Apple Watch logs and lets you view it in tons of different ways. You can see if youre on track to meet your calorie, stand and exercise goals, get insights into your heart health, and even see all the granular data about your heartbeat if you want to. My only qualm is that the icons and cosmetics of the app arent 100%. Everything else is really functional and I love the new iOS 10 app update!!
Spsful about
HeartWatch: Heart Rate Tracker, v3.0