Have you ever bothered looking for appropriate workouts on your watch? If so, why not create ones by yourself? WorkOther helps you do that, you can create custom workouts on it and use them on Apple Watch, which makes your Watch the all-round workout tracker.
Another feature worth mentioning is fat burning heart rate indication, It ensures your exercise intensity is enough for burning fat, so as to improve weight loss efficiency.
HealthKit
WorkOther requires the HealthKit permission to read your heart rate while doing exercises with Apple Watch, and write workout data into Health app.