My biggest challenge with using the Apple Health is that it doesn’t allow me to create custom graphs where I can see things like how my calorie intake or steps are impacting my weight or body fat percentage week over week. This app makes that simple. It pulls in all of your Apple health data and allows you to graph it in a variety of ways with multiple metrics on a single graph. It is highly customizable and nearly perfect. If I have to be nitpicky, there are a few very, very small bugs but nothing that should cause you to shy away from purchasing this. Highly recommended!