My suggestion is to make an option that shows the trending of all the scale stats on a single screen instead of having to swipe between them. I would like to be able to see at a quick glance if I am gaining or losing weight and how much and see if it is muscle weight, water weight or fat weight that is increasing/decreasing. If you take a look at the Lose-It app’s weight logging section you will see how nicely they did it for just weight.
Also, you have a lot of empty space on your app pages where you could make text larger/bolder and more easily seen. Keep up the good work on our app. It is nice to see frequent updates.