Works as promised, I just don't know why None of these apps work with the watch to tell you by vibrate if you're moving out of your zones and then back in. Add that feature and I'd be loving it. A buzz to tell you you're moving into the zone/s selected, double buzz if you go to low, triple if you go too high.... Would be awesome.

The app wouldn't download to Apple Watch until I updated phone to iOS 9.1 and watch to WatchOS 2.0.1. App allows me to start a workout, but there is no way to stop or finish the work out. My workout from this morning is still ticking at over five hours. The only way to reset the app is to reset the Watch. Easier to just note current heart rate on native watchOS app as I am familiar with the different zones for my age. I love the idea, but the app needs to alert me when I am dipping below or extending above the zone I want to train in. You must visually monitor the watch, which you can do with the native exercise app

I've been looking for an alternative to the workout app which displays kcals, heart rate, duration, and distance all on one screen. This app does all that, plus it displays your heart rate zone, which really helps me lock in the intensity of my workout. And for anyone wondering how to stop a workout- just force touch and choose "save". Easy.

Love it!! Exactly what I needed. A simple, clean, Apple Watch, running app!! No need to create a log in, cloud, etc. and unlike many others, the apple watch app works independent of your iPhone so there is no need to bring your iPhone on your workout. Full HealthKit integration. Set the parameters to maintain your workout within your heart rate zone (1-5).